WEBPAGE UPDATED Sunday January 30, 2022
The Oxygen Edge™ is a dependable commercial oxygen-injection life support system used for transporting live bait and tournament game fish in livewells and bait tanks. The fisherman adjusts the correct dose pure 100% oxygen on the oxygen regulator that insures 100% DO Saturation – 130% DO Supersaturation (the State, Federal and private fish hatch live fish transport Gold DO Standard) required for any and all live fish transports. Supplementing livewell water with the correct dose of pure oxygen allows a fisherman the luxury of seriously overstock/overcrowding livewells and bait tanks every summer and expecting minimal little mortality/morbidity caused by lack of dissolved oxygen, suffocation every summer. Transport 2.0 – 2.75 lbs. fish or live bait per 1.0 gallon of livewell water safely.
Some live bait fishermen prefer fishing with unnatural, abnormally strong, hyper-active, extremely durable live bait fish and bait shrimp. Fishermen may increase the dose of oxygen to maintain higher DO Super-Saturation levels and Supercharge Your Live Bait. Mother Nature has access to 21% O2 only in ambient air and cannot Supercharge live fish with pure oxygen.
When excited, transported, captures and hooked live bait fish produce the maximum sustained pure adrenaline naturally and the fisherman injects the supersaturating dose of pure 100% oxygen into the fish’s blood via the livewell water that mixes with the adrenaline. *Mother Nature cannot Supercharge a fresh caught bait fish/shrimp with air (aeration, 21% oxygen). Only the fisherman can Supercharge live bait fish and shrimp with pure compressed oxygen
Supercharging live bait with pure oxygen is neither natural or normal in aerated livewells and bait tanks.
Supercharge Your Live Bait with Oxygen
How Does Supercharging really work? https://oxyedge-chum.com/supercharge-live-baits/supercharge-live-bait-with-oxygen-how-does-that-really-work/
FACT: Too much O2 will certainly NOT KILL OR POISON your live bait or tournament fish during transport in your livewell. This myth is common.
FACT: Too little O2 during live fish and live bait transport can and will kill (suffocate) your live bait or tournament fish in summer overcrowded live hauls. Insufficient oxygen (hypoxia) kills people the same way.
CAUTION
Just because a livewell oxygen system may produce and deliver 100% pure oxygen, it may be no better than any mechanical aerator or water pump depending on the dose of oxygen and stocking density. The amount of oxygen required for all the fish or live bait during live transports is totally dependent on the collective metabolic oxygen demand of the total biomass of fish or bait transported in a livewell/bait tank; not the number of fish or water volume in the livewell or bait tank, but the total pounds of all the fish plus the aerobic micro-organisms consuming dissolved oxygen. The amount of oxygen required to safely oxygenate the total stocking density of fish or live bait continuously has nothing to do with the totally livewell/bait tank water volume.
HOW MUCH OXYGEN IS REALLY NECESSARY FOR LIVE TRANSPORTS?
Transporting live fish and live bait in livewells and bait tanks, requires a safe, continuous dose of oxygen dissolved in hauling water. 100% DO Saturation or greater maintained continuously for the duration of transport captivity. It makes no difference whether the transport is 10 minutes or days offshore hours… and it makes no difference if the haul tank contains (1) 12-ounces shiners or 500 lbs. of shad.
CAUTIONS
Pure 100% OXYGEN GAS – Know, thoroughly understand and always practice oxygen safety rules. Knowing fire safety rules when using oxygen gas is oxygen-enriched livewells/bait tanks and on bosts.
High Pressure Oxygen Cylinders – Know, understand and always practice high pressure oxygen cylinder safety. These safety rules also apply to all high pressure compressed air (SCUBA) cylinders.
Training and Education – NEVER USE PURE OXYGEN GAS OR HIGH-PRESSURE OXYGEN CYLINDERS IF YOU ARE NOT TRAINED OR THOROUGHLY KNOWLEDGEABLE OF THE “OXYGEN RULES OF THE OXYGEN ROAD.” OXYGEN FIRE SAFETY AND BOAT SAFETY TRANSPORTING AND USING OXYGEN AND HIGH-PRESSURE OXYGEN CYLINDER SAFETY ON BOARD.
Oxygen-Rich Fires – BEFORE YOU USE OXYGEN, UNDERSTAND AND KNOW HOW TO EXTINGUISH ANY OXYGEN-ENRICHED FIRE ON BOATS USING SUPPLEMENTAL OXYGEN IN LIVEWELLS. OXYGEN – ENRICHMENT AND OXYGEN – RICH IS MEANS 24% OXYGEN CONCENTRATOR OR GREATER.
“Why Do Some Oxygen Systems Fail?” https://oxyedge-chum.com/why-some-oxygen-systems-fail/
*Fishing Oxygen Systems fail when they DO NOT and/or WILL NOT deliver the minimal safe, continuous dose of pure 100% oxygen every summer for long periods of time whether your livewell is seriously overstocked or stocked correctly during live transports.
Fishing Oxygen Systems Are Definitely Not Created Equally
FACT: There are many types, brands, models of fishing oxygen systems today. More live bait or more mature fish being transported in the livewell always requires largeer doses of oxygen, therefore, the dose of oxygen must be adjustable and reliable depending on the stocking density. Increasing the amount of ambient air or more flowing water certainty does not insure more available dissolved oxygen for all the live bait in livewells and bait tanks in the summer.
“How Much Oxygen” is really necessary for all the bait and fish in your livewell and bait tank? This much oxygen – https://oxyedge-chum.com/how-much-oxygen/
FACT: Live transport DO standard is 100% DO Saturation for all State, Federal and private fish hatcheries worldwide.
One mature tournament fish or 1/2 lb. bait fish always require 100% DO Saturation or greater continuously during live transports. Makes no difference if the live transport takes 10 minutes, hours or days.
FACT: The dose of oxygen must be adjustable and correctly controlled depending on the total biomass of fish or live bait being hauled. The dose of oxygen must be easily changed and controlled by the fisherman. All electrical aeration device that delivers a limited fixed preset dose of oxygen <21% O2 using air bubble rocks, spray bars or livewell pumps is seriously limited by Mother Nature ambient air.
OXYGEN GENERATORS- 3 TYPES
Oxygenator™ Oxygen Generator Electrolysis Type and U2 Livewell Chemicals
FishO2™ Oxygen Generator- PSA Type
Oxygen Generator – VSA Type
More details about Oxygen Generators: https://oxyedge-chum.com/oxygen-generator/
OXYGEN INJECTION SYSTEMS
Oxygen Injection System – Oxygen Regulators, Adjustable Dose
Oxygen Injection Systems – Oxygen Pressure Valves, Fixed Dose
Chemical Oxygen System
Liquid Oxygen System (LOX) Systems
Liquid Stabilized Oxygen Systems
Summary
Aeration Systems
Oxygen Systems
Oxygenator™ Oxygen Generator – Electrolysis Type
Aqua Innovations Oxygenator™, distributed by T-H Marine is an electrolysis device primarily sold and used in freshwater livewells and bait tanks. This small D/C battery operated electrical oxygen system requires (2) AA or 12 volt batteries. Some units require daily maintenance after each use, some units are advertised as maintenance free.
LANE GERGELY’S CONFUSED OPINION
Lane Gergely, Sure-Life Products, Seguin, TX – Her professional opinion that the Oxygenator™ is an Ozone 03 generator posted on Texas Fishing Forum 7/25/2007.
Lane gets confused between Oxygen and Ozone gas. Lane’s aberrant believes The Oxygenator™ is an Ozone (O3) generator that produces pure Ozone gas. http://texasfishingforum.com/forums/ubbthreads.php/topics/1486114/1
Lane writes:
“The Oxygenator generates highly unstable ozone that converts to the more stable oxygen.”
“Ozone reacts with various chlorides [salts] and metals to generate chlorine which is toxic to fish.” Electrolytes are salts – https://en.wikipedia.org/wiki/Electrolyte
“The ‘Oxygenator’ sales literature claims that their U2 Pro Formula is the ‘ONLY’ safe livewell treatment that can be used with Oxygenators.”
“ANY LIVEWELL PRODUCT THAT CONTAINS A DECHLORINATOR [LIKE AMQUEL] can be used with their system, even it contains salt! Most if not all livewell supplements on the market today contain dechlorinators. Most contain ammonia neutralizers. Don’t be hoodwinked by slick salesmen and women using hype and slick marketing verbiage that is incorrect.”
Dechlorinaters and ammonia removing chemicals are NOT FDA APPROVED for use on food fish or fish that will or may be caught eaten by humans i.e., post live release tournament bass, crappie, redfish, etc. These chemicals are commonly used to transport ornamental, aquarium fish and live bait not for human consumption. Eating fish that that have been contaminated, soaking in livewells contaminated with these supplements for hours during tournament day may be a health risk you and your family health.
SCIENTIFIC FACTS: Texas Parks & Wildlife Department Research: Aqua Innovations Oxygenator™ – How Effective is It – by Fishery Biologist Randy Myers TPWD, Inland Fisheries Division, San Antonio, TX Publication 2-14-2012 http://www.slideshare.net/raminlandfish/the-oxygenator-how-effective-is-it No advertisement/fisherman testimonials/infomercial here. Livewell water contained no bait or fish consuming oxygen during TP&WD DO testing. Empty livewells with no fish DO NOT NEED ANY OXYGEN.
CAUTION: The gas space between a closed livewell lid and the water surface becomes enriched with 3 primary gases: oxygen gas, hydrogen gas and sometimes chlorine gas. Hydrogen is explosive like chlorine, acetylene and propane gas, chlorine gas is deadly toxic). Pure 100% chlorine gas is produced when electrolyzed livewell water contains any salt or livewell products that contain electrolytes. Incorporate any potential ignition source (electric wires, any live electricity) inside the livewell gas space creates a potential EXPLOSION HAZARD / FIRE HAZARD.
Electrolysis breaks down freshwater molecules into pure hydrogen gas pure oxygen gas and deadly hydroxyl ions. If the livewell water contains any salt, chlorine gas is always produced. Chlorine gas bubbles are visualized around the emitter as small greenish-yellow color gas bubbles (seen with back lighting). Hydrogen and oxygen bubbles are colorless, odorless and tasteless.
In freshwater livewells, two thirds (2/3 or 66%) of the gas bubbles produced at the emitter are pure 100% hydrogen gas (an explosive gas). Only 1/3 or 33% of the bubbles you see are 100% pure oxygen.
The Oxygen generator is designed, advertised and does produce [some] pure 100% oxygen by electrolysis of water only when the devise in in the on cycle.” It produces no oxygen in the off cycle.
The Aqua Innovations Oxygenator™ may not produce enough oxygen for all the fish or bait in the livewell, the total stocking density.
A FISH HEALTH FACT: Hydrogen gas combines with other elements (metabolic waste) in livewell water forming noxious and very toxic hydrogen sulfide gas that becomes very toxic when exposed to salt producing (hydrogen chloride).
Oxygenator™ has no moving parts, makes no noise but older emitters require considerable maintenance with special equipment after each use. Everything dies in the livewell if the oxygen life support system fails to produce and deliver enough pure oxygen continuously. Summer conditions and overstocked livewells exceed the Oxygenator™ capabilities to provide minimum. safe continuous DO saturation – DP supersaturation while the unit’s green light is on and appears to be working perfectly as advertised.
The actual DO saturation produced with the Oxygenator™ has nothing to do with the DO saturation required to meet and sustain the minimal safe livewell oxygenation for 8-10 hours of intensive summer transport in overstocked livewell conditions.
THE BULLET SALES POINT – The Oxygenator™ generates 100% pure oxygen. Technically the device does qualify as a livewell oxygen system. The Oxygenator™ costs as much as a livewell water pump or small air compressor.
Be Savvy: Understand what you are buying and O2 safety issues. Eliminate all unreal hopes, misunderstandings and unreal expectations before your purchase.
Ask the Oxygenator™ salesman or bass boat salesman these 4 simple questions before you buy:
FACT: The Oxygenator™ does generates some pure 100% as advertised… Oxygenators™ generates an unstable, small volume, fixed dose of oxygen regardless of stocking densities.
1. Will the Oxygenator™ provide and ensure minimal safe livewell oxygenation (100% DO Saturation) for all the fish and live bait all day in the summer?
2. Will the Oxygenator™ keep all my tournament fish or live bait alive and safely oxygenated all day in the boat’s livewell regardless of the stocking density DO requirements?
3. Will the Oxygenator™ provide and ensure minimal safe livewell oxygenation (100% DO Saturation) and keep my live bait alive and healthy in my livewell/bait tank all day, all night in the summer?
4. Texas Parke & Wildlife Department (inland Fisheries’ opinion. Is it necessary to use livewell aerators, run water pumps, spray bars in conjunction with the Oxygenator™ in summer livewells? VISIT: The Oxygenator – How Effective is It – by Fishery Biologist Randy Myers TPWD, Inland Fisheries Division, San Antonio, TX Publication 2-14-2012 https://www.slideshare.net/raminlandfish/the-oxygenator-how-effective-is-it
Livewell oxygen systems must produce, maintain and sustain minimal continuous dissolved oxygen saturations (100% – 175% DO saturation) in a bass boat livewell, tournament weigh-in holding tank, release boat transport tanks containing a heavy limit, (many limits of tournament bass are15-30 lbs. fish or 400 lbs. of live fish) all day long during July/August tournaments.
ELECTRICAL CURRENT IN LIVEWELL WATER – Electrical Oxygenators may cause additional severe physiological and psychological stress for live bait and tournament gamefish.
NEGATIVE AFFECTS OF ELECTROLYSIS is well known by fishermen… electrolysis breaks down metal and electrical components on boats, motors and boat trailers. Zinc anodes are necessary to retard the negative effects of electrolysis.
The hallmark selling of T-H Marine “The Oxygenator ™ is that it makes 100% pure oxygen,” Period. But will the Oxygenator™ really make enough oxygen to sustain an overcrowded livewell full of tournament fish or live bait all day in the summer is something Oxygenator salesmen and bass boat salesmen sellers will not mentioned or discuss with you.
When the Oxygenator fails to produce sustain and insure the minimal safe dissolved oxygen (sustained 100% DO Saturation of DO Super-Saturation) all day for all the catch, your gamefish and bait may suffocate while the generator is making 100% oxygen, operating perfectly as advertised. Like when your mechanical aerator or livewell water pump is working perfectly, humming away while the tournament fish or bait are suffocating and dying in your summer livewell every summer while you are watching.
Visit The Oxygenator – How Effective is It – by Fishery Biologist Randy Myers TPWD, Inland Fisheries Division, San Antonio, TX Publication 2-14-2012 https://www.slideshare.net/raminlandfish/the-oxygenator-how-effective-is-it
Facts and limitations about the T-H Marine Oxygenator™. Expect very limited pure oxygen production and low dissolved oxygen (DO) saturations in livewells full of game fish and live bait every summer. Why? Because the oxygen output is controlled and cycled on and off strictly by livewell water temperature. When the unit is new and functioning correctly in late fall, winter, early spring weather, the small volume of 100% oxygen may satisfy the biological oxygen demand for a few fish or a few live baits when environmental water temperature is 40 F – 65 F.
FACT: The amount of oxygen tournament fish and live bait fish need is based on the biological demand of all the fish in captivity, collectively. The amount of oxygen needed has nothing to do with a livewell’s or bait tank’s water volume.
Failure to generate enough DO is a seasonal problem like aeration, exhibiting every summer when the surface water temperature reaches 75 F – 90 F. Like all mechanical aeration and water pumps, you cannot ensure minimal safe livewell DO saturation with air or the Oxygenator™ in heavily stocked livewells. Water pumps only pump water and air pumps only pump air… air and water are not oxygen.
The livewell water temperature sensor (the brain of the electrolyze is a thermometer) Water temperature regulates and controls the on and off cycles intermittently. The unit generates oxygen when only in the on-cycle. The amount of oxygen that’s generated is strictly controlled by livewell water temperature not by fisherman, the oxygen demand of the stocking density.
Add ice to cool the water and the unit cycles less generating less oxygen whether the well contains (1) three-pound fish, (100 five-pound fish or (15) fifteen pounds of live baitfish. Unlike standard professional fish transporters’ dissolved oxygen standards for transport DO protocols, livewell stocking densities. Livewell DO transport requirements are not a consideration, no concern with the Oxygenator™ O2 production limits is a major design feature can be absolutely deadly in the summer.
Fishermen cannot adjust the dose (volume) of 100% oxygen the Oxygenators produces in the summer creating the dreaded issue of low livewell DO Saturation often resulting in suffocation. The same extremely limiting DO water quality factor as mechanical aeration in the summer… insufficient safe oxygenation that is the cause of livewell suffocation.
DISSOLVED OXYGEN SATURATION RATE: Oxygenator™ T-H Marine literature also claims to generate 80% DO saturation in 20 minutes in freshwater livewells, no fish or bait in livewell water consuming oxygen, livewell stocking density -0-.
How do you think 80% DO Saturation in 20 minutes with an Oxygenator™ squares with oxygen-injection systems (any standard aerator, spray bar, Mr. Bubbles, air pump or livewell water pump?
FACT: With no fish or bait in the livewell [livewell stocking density and the standard mechanical aerators livewell pump running perfectly, 80% DO saturations or greater are easily reached within several minutes in summer livewell water. Even Mr. and Ms. Bubbles air pumps and bubblers can and will achieve 80% DO saturation under the same conditions in a few minutes in livewell water devoid of live bait and fish.
T-H Marine U2 LIVEWELL ADDITIVE ADVERTISEMENT
Boldly claims the U2 livewell supplement is the only supplement safe to use with the Oxygenator!
DO NOT USE THIS DEVICE IN SALTWATER LIVEWELLS OR BAIT TANKS and DO NOT USE SALT OR ANY LIVEWELL CHEMICALS or LIVEWELL WATER CONDITIONERS THAT CONTAIN SALT.
T-H Marine claims in their U2 product sales literature states the formulation contains essential electrolytes. Livewell additives and chemicals contain sodium or potassium electrolytes that aid osmoregulation in fish and fluid-electrolyte balance.
What are the “essential electrolytes in livewell chemicals and formulations? Combinations of primary ions compose physiological electrolytes. Ions of Sodium (Na+), Chloride (Cl−), Potassium (K+), Calcium (Ca2+), magnesium Mg2+), Hydrogen Phosphate (HPO42−), and Hydrogen Carbonate (HCO3−). http://en.wikipedia.org/wiki/Electrolyte
Before you turn on an Oxygenator™ it is essential that you KNOW beyond any doubt whether the livewell chemical or additive you added to your livewell water contains any salt compounds.
If you are ever in doubt if any livewell additive contains salt, taste it. If you detect a salty taste, the formulation probably contains salt… Don’t turn-on your Oxygenator™.
CAUTION: Many livewell chemical manufacturers claim their fish saver livewell formulations and chemicals consist of “food grade” ingredients and may be used on food fish. Many of these products are clearly not FDA approved for use on food fish for human consumption and should never be used on tournament gamefish that are released alive after the tournament. Tournament catch and release gamefish are used for food fish for many fishermen, their wives and children.
Upon your request, any ethical livewell chemical manufacture should provide a Material Safety Data Sheet (MSDS) or complete list of formulation ingredients upon your request.
All the ingredients in the MSDS should be FDA approved for use on food fish for human consumption. It’s a public health issue and ethical statement regarding any concern for fellow fishermen and families that may catch and eat that fish you released yesterday after the tournament – The fish that you soaked 7-8 hours in the chemical bath in your livewell.
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FishO2™ Oxygen Generator PSA Type
FishO2™ is a PSA (pressure swing absorption) oxygen generator. It requires electricity, D/C batteries. It is very similar to PSA medical oxygen generators sold and leased by Durable Medical Equipment companies and Home Health Agencies. This noisy little unit will produce some oxygen too. The dose, volume and concentration of oxygen you may need is NOT adjustable; you have no choice here. The machine is either off or on as long as your battery lasts.
Hot gases: PSA generators entrain ambient air at ambient air temperatures. Air temperature can exceed 100 F in the summer. Inside the unit ambient gas temperature is elevated even higher because the electric motor/air compressor inside the sealed housing runs continuously producing mechanical heat. Because the gas delivered to livewell water is hotter than ambient air temperature, expect your livewell water to be really HOT, always hotter than air temperature.
An encased 12-volt electrical air compressor/motor pumps room air through canisters of packed hygroscopic (the tendency of a material to absorb water and having the characteristic of drawing moisture from the atmosphere) Zeolite sieve beads. New and dry Zeolite beads can filter out some nitrogen and deliver near 87% oxygen in limited small volumes only when the unit is brand new. PSA generators deliver various concentrations of mixed gases; they do not deliver pure oxygen. When Zeolite sieve becomes saturated with water vapor, delivery oxygen concentration falls precipitously, sieve beds stop-up, gas flow occludes, and maintenance is required. Zeolite canisters must be replaced, or the Zeolite must be taken out of the canister and regenerated.
The volume and concentration of oxygen delivered to the livewell is limited and cannot be controlled by the fisherman.
Molecular filtering efficiency and outlet oxygen concentrations degrade rapidly when used on boats, specifically when used in warm high relative humidity environments.
FishO2™ does not come with an air dryer on the inlet side of the air compressor which is a problem when used in ambient environments. Inline air dryers eliminate ambient relative humidity problems and extend the life span of sieve beads hundreds of hours. Air dryers reduce incidents of catastrophic system failure.
Factory maintenance is required when FishO2™ is not working properly. Expensive testing and diagnostic equipment are commonplace at the factory.
Fishermen do not need expensive oxygen testing equipment to know if a problem in the livewell is real. The bait or mature tournament fish in the livewell “speak in terms of behavior” to the fisherman, some dead some dying. When water quality is safe, bait should behave and look like guppies in your 10-gallon square home aquarium; no foamy dirty surface water that may stink.
Whenever the dissolved oxygen concentration is insufficient, unsafe and suffocation begins, the bait behaves like it’s in an aerated livewell or bait tank at 10 AM on a hot July day… floating, piping at the surface, stacking in corners, red-nosed, sloppy, lethargic, dying, dead, foam on livewell water surface, livewell water cloudy, stinks… all live baiters and tournament fishermen know these signs. Watch your bait or tournament gamefish in the livewell. Bait and fish will behave exactly like they did in summer in your aerated livewell when the oxygen levels are low, unsafe.
This PSA generator has a very low outlet pressure which can be problematic when used with oxygen diffusers and small-bore oxygen tubing. Oxygen diffusers are ineffective because of low outlet pressure. Low pressure air diffusers are necessary.
Be aware of this problem PSA oxygen generators that deliver 90% oxygen concentrations or less depending on the porosity and collective water saturation over time.
FishO2™ PSA generators have many small delicate moving parts: many delicate valves, switches, constant noise, constant heat and constant vibration. The air compressor motor runs continuously, the compressor motor does not cycle on and off.
PSA generators have internal switching valves that dump nitrogen and deliver oxygen intermittently to different internal sieve canisters. When working correctly, it may sound like the generator is turning on and off and may give you a false impression of conserving electricity between cycles. Nitrogen is filtered from the air, dumped and returned to the atmosphere; oxygen is conserved in a small internal gas reservoir then pumped to the livewell. Giant pore air stones or venturi devises are recommended by the manufacturer because of the low-limited outlet gas pressure.
FishO2™ is capable of producing oxygen-enrichment. Oxygen gas safety is often discounted as not important by many fishermen or worse, oxygen safety is never mentioned at all in their sales literature.
CAUTION-FIRE SAFETY: Oxygen enrichment is oxygen enrichment regardless of the source of oxygen, there are safety issues that must be considered. It makes no difference whether the oxygen comes from an Oxygenator™ PSA generator, pressurized oxygen cylinder or liquid oxygen cylinder; the “Rules of the Oxygen Road” apply. Some salespeople recommend entraining PSA generated oxygen into the intake side of a bilge pump or livewell pump located inside or outside the livewell. FIRE HAZARD
CAUTION-FIRE SAFETY: Water pumps, Bilge Pumps and Oxygen: Rule, Inc., Jabsco, Xylem, Atwell, Johnson, Dannco and other livewell / bilge pump manufacturers DO NOT recommend entraining oxygen enriched gas through venturi devices located up stream directly into their pumps.
CAUTION-FIRE SAFETY: Their pumps are ignition protected to ISO 8846 for use in fuel/air environments like boat bilges. None are ignition protected nor certified for use with pure oxygen or oxygen enriched environments. FIRE HAZARD
Use in environments with high relative humidity, on boats: When PSA generators are used in high relative humidity environments, electrical switches, pneumatic valves and clogged sieve beads are problematic, common and require maintenance, especially when used in high humidity saltwater environments.
Expect problems: Additional livewell heat from hot gas, noise, vibration, limited /unstable doses, gas volumes and concentrations, low gas delivery pressures, low variable gas flows and the potential for catastrophic internal electrical or gas plumbing failure is high. Expect additional livewell problems, failures and repair cost.
The Hidden Cost of PSA Oxygen Generators: Always ask the salesman about the all the hidden cost of PSA generator operation including required maintenance, repair and return shipping to the manufacturer or dealer. This unit must be returned to T-H Marine for all maintenance, repair and adjustments. Before you purchase a PSA oxygen generator, find out how much it cost to replace or rebuild the air compressor, electrical switches or to replace Zeolite sieve beds. This unit cannot be repaired on the boat. If you open the unit housing your warranty is VOID. Cost $750.00
Oxygen Generator – VSA Type
Vacuum Swing Adsorption VSA oxygen generators are used to purify air, manufacture oxygen, nitrogen and hydrogen gas. VSA technology plays an increasingly important role in the commercial production of oxygen.
VSA oxygen generators differs from Pressure Swing adsorption (PSA generators) because it operates at near-ambient temperatures and pressures. The simplicity of the VSA process may allow for greater efficiency and cost savings, and less maintenance than PSA systems. Oxygen cost less to produce than using PSA generators.
WHY? The use of a vacuum step provides a superior regeneration of the molecular sieve bed, thus extending sieve life. Overall, the VSA adsorber vessel has much longer service life than two-bed PSA vessels, which commonly need re-packing of sieve material every 3–5 years.
As a result, power savings of as much as 50% can be achieved, when compared to the simpler PSA systems. However, VPSA systems typically have comparable or better power efficiencies. Maintenance issues typically associated with two-bed PSA systems are greatly reduced with VSA technology. Lower operating pressures also eliminate any water condensate.
IMPORTANT – VSA oxygen generators are not as susceptible to humid environments as PSA systems, while PSA feed compressors require water removal hardware [dehumidifiers], and oil-removal hardware if an oil-lubricated compressor is used.
The design simplicity and efficiency that VSA technology offers has generated products that are more energy- and cost-efficient than traditional gas separation units like PSA oxygen generators.
http://en.wikipedia.org/wiki/Vacuum_swing_adsorption
Oxygen-Injection System-Adjustable Dose Oxygen Regulators
The Oxygen Edge™ regulators deliver a precise dose of pure 100% oxygen continuously during transports. The fisherman controls/regulates the correct dose of oxygen. The precision gas regulator offers fishermen a wide range of doses that may be increased or decreased as your bait or tournament fish load (stocking density) increases or decreases ensuring minimal oxygen waste reducing, controlling your cost of operation.
This turn-on-and-forget oxygen-injection system adapts to all saltwater and freshwater livewells and bait tanks. It will deliver the correct dose of oxygen continuously that safely satisfy the total oxygen demand in overcrowded livewells in hot summer conditions. Ice is no longer needed to induce livewell hypothermia in the summer. It’s engineered and designed to deliver and maintain a supercharging dose of oxygen preventing any chance of livewell hypoxia for Catch & Release tournament fish and all live bait under the harshest summer conditions. Use in a closed livewell system for best results.
Buy and use the same compressed welding oxygen that your State and Federal fish hatcheries use when they oxygenate live fish and baitfish during transports.
The Oxygen Edge™ adjustable dose regulator utilizes inexpensive compressed welding oxygen, delivered with a specially designed Oxygen Edge™ solid brass regulator that is safe (not a repackaged medical oxygen regulator), nickel plated internally and externally, back pressure compensated, CGA E-4 Ignition Test Certified (a major safety issue) and a CGA 540 hand wheel connector. No wrenches are required to connect/disconnect the regulator to a non disposable 540 CGA oxygen cylinder valve
Oxygen-injection technology makes no noise and has no moving parts thus ensuring dependability with minimal maintenance.
The correct dose of oxygen needed and delivered is based solely on the total biological oxygen demand plus the livewell stocking density. The correct dose of pure oxygen necessary for live transports is 100% DO saturation or DO supersaturation regardless of stocking density. Fishermen determine and control the dose of oxygen necessary. Your ability to control the correct dose of oxygen is the most important water quality parameter, it’s essential when transporting live bait or gamefish in the summer.
Oxygen-Injection Systems – Fixed Dose Oxygen Pressure Valves
Texas Parks & Wildlife Department oxygen injection system and several Fish-Flo2 oxygen systems incorporate fixed flow, fixed dose oxygen regulators/pressure valves. The pressure valve delivers 1 specific fixed dose of oxygen only regardless of the stocking density biological oxygen demand. The dose of oxygen cannot be adjusted or changed by the fisherman as the stocking density increases or decreased. http://www.slideshare.net/raminlandfish/livewell-oxygen-injection-8773301
Fish-Flo2 also sells 2 oxygen systems that use fixed flow pressure regulating valves, a Disposable Cylinder System, RC Tournament Series mdl. FFOSDIS-FIXED and a Non-Disposable Cylinder System, DC Tournament Series, mdl. FFOSS540-FIXED.
Fixed dose oxygen pressure valves or regulators have very limited oxygen delivery capabilities which may directly impact fish and live bait health negatively during transports. They are not designed for flexibility nor accommodate wide range stocking densities. They may waste oxygen with small stocking densities or fail to deliver enough oxygen resulting in suffocation and mortality.
Minimal safe oxygenation for stocked and overstocked livewells during transport is continuous 100% – 150% DO saturation. This DO saturation must be sustained continuously whether the livewell contains 1 five lb. fish or 500 lbs. of fish in a release boat livewell. More fish require more oxygen, not more air, larger water pumps, lower water temperature (>hypothermia).
Oxygenation of Livewells to Improve Survival of Tournament-Caught Bass
By Fishery by Biologist Randy Myers and Jason Driscoll
TPWP, Inland Fisheries Division, San Antonio, TX Publication 6/2011
http://www.tpwd.state.tx.us/fishboat/fish/didyouknow/inland/livewells.phtml
Oxygen Injection Systems
By Fishery Biologist Randy Myers 6/2011
TPWD, Inland Fisheries Division, San Antonio, TX Publication
http://www.slideshare.net/raminlandfish/livewell-oxygen-injection-8773301
Understand the capabilities and limitations of your oxygen system and you will never be surprised or disappointed with your equipment. Expect surprises and disappointments in the summer when you don’t understand oxygen equipment limitations.
Chemical Oxygen Systems
Pebble-Halverson, Inc. makes O-Tabs (bait tank oxygen tablets), a chemical composition of strontium peroxide, calcium monophosphate, calcium sulfate, and manganese dioxide, no moving parts or noise here and a limited amount of pure oxygen is produced. The O-TAB business has run continually since 1939.
The small dose of oxygen delivered is short lived, limited and cannot be adjusted when the livewell stocking density and biological oxygen demand increases or decreases.
10% Dissolves Carbon Dioxide and Hydrogen Peroxide is a Killer: O-Tabs react with water releasing a limited amount of pure oxygen, 10% carbon dioxide and hydrogen peroxide. Hydrogen Peroxide breaks down producing water and oxygen concentrations greater than air.
Carbon dioxide dissolves in water producing carbonic acid and producing acid pH, compromising livewell water quality quickly. Hydrogen peroxide (potent oxidizer) can chemically burn gill tissue, eyes and skin compromising fish health and increasing mortality. Cost is cheap but you may pay a high price.
Supa Oxygen Tabs http://www.supa-aquatics.co.uk/products/aquatic/
Oxygenating Tablets – Tablets of potassium chlorate which when placed in water dissolve and slowly release oxygen into the water.
Liquid Oxygen System (LOX) Systems
Liquid oxygen is cold (-273 F.); don’t get it on you. It burns quick like steam. LOX systems are commonly used by large hospitals, commercial fish farmers, State and Federal fish hatcheries to transport millions of pounds of live fish across the country and around the world every year. Cold liquid oxygen is warmed, converted to a gas and finally dissolved in transport water at various concentrations in multipliable haul tanks.
LOX is used extensively to transport large volumes of live fish. LOX is also used in intensive closed system aquaculture (fish farming). The dose of oxygen delivered is adjustable and accommodates wide ranges of stocking large densities. LOX systems are expensive to set up, liquid oxygen costs are relatively inexpensive compared to compressed oxygen. LOX systems are very dependable and quiet. Cost $2,000.00
Stabilized Oxygen Systems
Liquid stabilized oxygen (room temperature) is a food supplement that may be purchased at health food stores and used in livewell water. The concentration of dissolved oxygen delivered may vary considerably depending upon the initial DO concentration, the shelf life and the material the container is made of plastic or glass. How the container is sealed is critical as oxygen can leach through and react with many types of plastic bottle materials. Cost $40.00 per quart.
OXYGEN SYSTEMS ARE NOT CREATED EQUALLY
Aeration Systems
Aeration Systems are used to Ventilate Livewell Transport Water – Not to Safely Oxygenate Livewell Water: The primary purpose of mechanical aeration systems used in livewells is to ventilate livewell water, flush out metabolic toxins (off-gas dissolved carbon dioxide and ammonia).
Air is mostly nitrogen gas with a little dab of oxygen – Air is 4/5 nitrogen gas by volume. Livewell water pumps pump water that has been exposed to air. Air and hydrogen look like oxygen, taste like oxygen and have no detectable smell. These gases make clear gas bubbles in livewell water.
Aeration devices pump air (lots of air). Many fishermen have been condition to believe air and oxygen are the same gas. High volume water pumps flush vast quantities of water through livewells.
Mechanical aeration is never used to ensure minimal safe oxygenation for professional live fish and live bait transport.
Metabolic toxins are easily managed with a few daily livewell water exchanges.
Mechanical aeration systems include livewell water pumps, air pumps with bubble stones, scoops, spray bars, air ventures and agitators. Aerators are equivalent to treating a serious hypoxia event with an electric fan.
Mechanical aeration systems in livewells use electric motors, they’re noisy, create additional heat, need electrical DC battery power and cause much angst and disappointment in summer livewells for many fishermen hoping air may turn into oxygen and save the bait or tournament fish.
Air pumps blow ambient air at ambient pressure and temperature through spray bars or through air tubing attached to a gas diffuser. Air bubbles aerate livewell water, off-gassing dissolved CO2 and ammonia gas. All the aeration modifications in the world won’t increase the small, limited oxygen concentration in ambient air.
More air (aeration) or bigger water pumps are certainly not the treatment of choice to correct livewell water quality with low-no oxygen in the summer, contrary to popular fisherman testimonials, sales literature, C&R Tournament Directors and outdoor writers’ beliefs.
Electro-mechanical aerators are always prone to malfunction and failure at times when you need them most. Livewell pump fails, battery runs out of juice, electric switch fails, electric motor fails, motor bearings fail, >well water temperature.
Your Costs for Aeration: Replacing pumps, switches, batteries, air pumps are not free – mechanical air aeration is not FREE. The cost of operation can be quite expensive over several seasons. Look in the cockpit of a $50,000 bass boat and ask the salesman how much all that livewell stuff adds to the drive out price of the boat. Many fishermen always have several spare pumps on boars, maybe a spare deep cycle battery anticipating battery failure, pump failure. Most of all that stuff in the cockpit is all about the livewell.
“Tuna Tubes” and “Striper Tubes” (a live fish holding tube akin to an aerated livewell) are another type of livewell and mechanical aeration water pump device with the same serious dissolved oxygen limitations resulting is sloppy dying bait fish every summer. Fish tubes may work a little better in colder fall, winter and spring months, but often fail miserably to provide minimal safe oxygenation in hot summer conditions.
Expect high mortality and morbidity every summer with fish tubes. Makes no difference if it;s a Striper Tube or an expensive Tuna Tube, live bait fish simply suffocate in the tube every summer while hundreds of gallons per hour of warm environmental water is pumped continusouly through the tube. Bigger water pumps won’t correct the low oxygen problem with tubes in the summer.
CAUTION: Excessive aeration can cause dissolved nitrogen supersaturation. That can cause gas bubble disease, gas embolism, pop-eye and tissue emphysema. Air supersaturation can cause far more harm to live captive fish and tournament gamefish in livewells than benefits. Air leaks and air entrainment ventures on the inlet side of livewell water pumps is a primary cause of nitrogen supersaturation. When you see millions of tiny micro bubbles of air coming out of the outlet side of a livewell pump into livewell water, expect gas bubble disease, etc.
Using oxygen and oxygen equipment safely requires a functional knowledge and faithful practice of the “Rules of the Oxygen Road.” Understanding the gas and understand the limitations of your equipment is necessary in order to be safe and get your job done successfully with minimal dead bait disappointments and failures.
The USCG regulates all transport and storage of high-pressure oxygen cylinders, SCUBA (air and mixed gases) and helium cylinders on vessels.
Every time oxygen equipment is abused and misused by fishermen that have no training in oxygen use and fire safety on boats; danger lurks for captain, crew and other fishermen on the boat. Those who intentionally or ignorantly disregard, abuse or reject the importance of oxygen gas safety or the Rules of the Oxygen Road or USCG regulations and oxygen safety codes flirt with danger. FIRE HAZARDS
Safety, transport, storage, handling and the administration of oxygen requires specific applications learned through specific instructions, training, knowledge and application about oxygen and oxygen delivery equipment.