Causes of Fish Kills and Lake and Fish Pond Management using Aerators

There are a number of causes of fish kills including lack of oxygen, herbicide usage disease, pollution, stress, starvation and old age. Lack of oxygen from a few feet below the surface to the bottom may cause fish to only swim in the surface water. If the surface water is warm, fish could die from the warm water or from ammonia and carbon dioxide in the bloodstream turning into gas bubbles. Rotting weeds or algae as a result of using herbicides or algaecides can cause a temporary lack of oxygen which is not discovered by later testing.

Causes of fish kills are often lack of oxygen and/or the use of herbicides. This could be experienced in the middle of the night when plant photosynthesis reverses and competes with the fish for oxygen. Water is rarely tested for oxygen in the middle of the night.

The best way to eliminate the causes of fish kills is to ensure there is always enough oxygen. Oxygen not only keeps fish healthy, it keeps the entire ecosystem healthy. The CLEAN-FLO Lake Aerators and Fish Pond Aerators provide consistent levels of oxygen at all times. Fish are not stressed by a pre-spring or pre-fall turnover, photosynthesis or the use of herbicides. CLEAN-FLO eliminates the causes of fish kills.

Clean-Flo Lake Aerators and Pond Aerators remove toxic gases, enabling bacteria and insects to feed on organic sediment just as a snail does in an aquarium. Fish then feed on the insects and become larger and healthier. The CLEAN-FLO Lake Aerators and Pond Aerators convert organic sediment into food for fish; rapid fish growth occurs and the causes of fish kills are eliminated.

Tests at Auburn University in Georgia showed that fish production increased from 3,000 lbs. per acre in un-aerated ponds to 6,000 lbs. per acre in aerated ponds, using CLEAN-FLO Fish Pond aerators.

In seasonal production tests monitored by the Minnesota Department of Natural Resources, Operation Walleye at Alexandria, Minnesota demonstrated an increase in walleye fingerlings from an average of 38.3 lbs. per acre for un-aerated ponds to 69 pounds per acre using CLEAN-FLO Fish Pond Aerators. The fingerlings in the un-aerated ponds averaged 4.5 fish per pound, while the fingerlings in the CLEAN-FLO pond averaged 3.2 fish per pound.

Tests by Minnesota Department of Natural Resources in St. Paul, Minnesota on two lakes with CLEAN-FLO Lake Aerators showed more abundant fish, which were twice as large as the statewide or local average. A fishing survey showed an average of 49 hours per acre fishing pressure in 13 neighboring un-aerated lakes versus 133 hours per acre for these two CLEAN-FLO aerated lakes. Minnesota Department of Natural Resources

Minnesota DNR tests of Mountain Lake in 1988 showed that since CLEAN-FLO Lake Aerators were added to Mountain lake in 1983, white crappie population became 77 times the regional average, bluegill 20 times and northern pike 7 times. Minnesota DNR tests of CLEAN-FLO aerated Crystal Lake at Lake Crystal, Minnesota showed the walleye population at nine times the regional average.

Taiwan fish farmers reported double the growth rate, no more fish kills, and double the number of fish raised using CLEAN-FLO Fish Pond Aerators.

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Winter aeration with the CLEAN-FLO process prevents the causes of fish kills.	We strongly recommend a snow fence and open water signs be placed around the open water holes for safety purposes.	Keeping a small area open in the winter can inexpensively prevent the causes fish kills.