a study was undertaken to determine the exact benefits and potential detriments conferred through the use of impact ™, a natural bacterial product containing non pathogenic bacteria . other ingredients packaged with the non pathogenic bacteria include materials usually packaged with bacterial cultures such as buffers , nutrients , and hydroscopic agents to keep the product dry until use . ingredients include bicarbonate of soda , sugar such as sucrose , and hubersorb hydroscopic agent , two test systems were set up containing 150 gallons each . the subject tanks were set indoors , in a temperature controlled environment , and shared identical day lengths . both systems were run with 300 watt submersible electric heaters at 80 ° f . each system had identical wet / dry filtration systems charged with virgin media , to include an identical mixture totaling 17 liters each of lava rock and synthetic bio - balls . the flow rate in each system was 378 gallons per hour . both systems were fed the identical food , in identical amounts , at identical times . for this study tetra &# 39 ; s pond sticks ( color enhancing type ) were selected . each day at 1 : 00 pm est , the water was checked for a variety of parameters including : later in the study , secchi discs were replaced by imhoff cones in order to monitor the actual suspended solids in both systems . it is believed that the product has an additional benefit in the degradation of these solid wastes , resulting in less sludge accumulation in the static water systems . additional emphasis was placed on whether the treated system experienced any deterioration in dissolved oxygen concentrations after addition of the product . seven days before the system startup , the parallel tanks were filled and allowed to de - gas for one week without circulation . to preclude the potential for pathogens upsetting the study and results , a group of fish used in the study , plus one , were quarantined and treated with salt at 0 . 3 % for one week prior to installation in the parallel systems . they were closely observed in the quarantine for macroscopic parasites such as lernea elegans and argulus . these two pathogens , in particular , predispose fish to ulcer disease ( aeromonas bacterial infection ) which could affect the possible conclusions regarding safety of the product . the &# 34 ; plus one &# 34 ; fish was sacrificed and found to be pathogen free . the day before startup , the systems were plumbed and filters were installed , using virgin media , and circulation was started . water parameters were checked and recorded . all values for ammonia and nitrite were zero . on the first day of startup , the first six fish were added to the system , three to each tank . ammonia had already begun to climb in the system . the second day , the second six fish were added to the system , three to each tank , making a total of 12 fish per system . two fish jumped from one of the tanks and were lost . one fish from the other tank was resettled in the tank that lost two fish to even the population at eleven fish in each tank . on the fourth day 4 . 5 tablespoons of impact ™ water quality enhancer was added to the test tank , the other tank in the test was a control tank . the composition of impact ™ consists of bacterial cultures on bran , nutrients , buffers and a hydroscopic agents . twenty five pounds of impact ™ contain 6 pounds of nas 1 and two pounds of dynabac 1000 , 11 pounds of bicarbonate of soda , 5 . 8 pounds of sugar , and 0 . 8 pounds of hubersorb desiccant . nas 1 and db 1000 are available from environmental dynamics inc ., po box 99 , natural bridge station , va . 24579 . nas 1 is a mixture of bacillus lentimorbus strains and bacillus stearothermophilus strains and is also available from ryter labs . dynaback 1000 is bacillus cereus and is also available from nugen , inc . on the sixth day , one cup of pelletized domestic limestone was added to each system to preserve the ph . on the tenth day an additional 4 . 5 tablespoons of impact - a ™ water quality enhancer was added . on the eleventh day a 60 % water change was required to salvage the subject fish from ammonia rise . on the eighteenth day an additional 4 . 5 tablespoons of impact - a ™ water quality enhancer was added to each system . at the conclusion of the test , the fish in the treated group were fully twice as developed as those in the control group . the addition of the loading dose of the impact ™ water quality enhancer consumed a mere 1 ppm of dissolved oxygen for the first 48 to 72 hours following application . impact ™ water quality enhancer only briefly decreased ammonia concentration by less than 1 ppm and that benefit was only noted for 24 hours . impact ™ water quality enhancer did not cause or exacerbate bacterial ulcers in treated koi . the addition of impact ™, by action of the bacterial cultures therein or the buffers that stabilize it , coffered superior clarity to the water . impact ™ contains an excellent buffer that stabilizes the ph near neutral and confers protection of the ph by adding to total alkalinity . the average starting weight for the control group was 14 . 27 grams . the average starting weight for the treated group was 14 . 82 grams . the average finish weight for the control group was 18 . 82 grams . the average finish weight for the treated group was 26 grams . the average ammonia concentration was 1 . 11 ppm in the control tank and 1 . 3 ppm in the treated tank . the ammonia concentration reached 3 ppm in the treated tank on days 15 and 16 as compared with 2 . 5 ppm in the control tank on the same days . the average nitrite concentration in the control tank was 0 . 13 ppm as compared with 0 . 15 in the treated tank . the averages ran fairly parallel from study day 1 to study day 32 reaching a maximum of 0 . 50 on days 20 through 24 for both systems . the average ph for the control group was 7 . 28 as compared with an average of 7 . 47 for the treated group with the ph of the treated group being far more consistent through a 19 day period . the following , except for the description of the contents of impact - a ™ fish weight enhancer , is a report from the mississippi state university department of agricultural economics . preliminary report on the results of applying impact - a ™ fish weight enhancer , a biological product on feed consumption and catfish production in open ponds in the delta area of mississippi , 1995 . impact - a ™ fish weight enhancer is a biological product developed by environmental dynamics , inc . it consists of a mixture of 23 . 5 pounds of sodium bicarbonate , 18 . 5 pounds of sugar , 1 . 5 pounds of hubersorb desiccant , 11 . 75 pounds of a nas - 1 , a mixture of bacillus lentimobus strains and bacillus stearothermophillus strains , 18 . 5 pounds of nas - 5 which has the same mixture of bacteria strains as nas - 1 and in addition contains amylase and lipase enzyme , and 2 . 0 pounds of dynaback 1000 which consists of bacillus cereus . conventional micronutrients and macronutrients are also present . dewatered humus containing humic acid and ulmic acid is also present . the impact - a ™ fish weight enhancer organisms improve water quality in aquaculture ponds . the impact - a ™ fish weight enhancer organisms are the same as those that occur in nature . the impact - a ™ fish weight enhancer product concentrates these organisms to a concentration of 4 . 5 × 10 8 . the treatment technique of adding the microorganisms and micro nutrients to warm water causes the organism to multiply to even larger numbers for an hour just prior to adding the impact - a ™ fish weight enhancer to a pond . at the current stages of development , all of the impacts on water quality are not known . however , the product is designed to reduce the amount of ammonia in the ponds compared to the level expected if the same conditions exist in the pond without the treatment . further research will more thoroughly identify water quality impacts . impact - a ™ fish weight enhancer is in a dry powder form in sealed containers to prevent moisture absorption prior to use . the bacteria are dormant and are packaged with micro nutrients that will promote rapid multiplication during the treatment process . the optimum treatment for ponds is not known and will be a major objective of future research . the rate used in the tests was 12 pounds of impact - a ™ fish weight enhancer per water surface acre for the initial treatment and approximately 4 pounds per water surface acre were used per weekly treatment beginning on apr . 26 , 1995 and ending oil oct . 19 , 1995 . due to shipping problems , two treatments were missed during the period . also , the last few weeks of the treatment used double strength product . applying the impact - a ™ fish weight enhancer to the ponds involved weighing the appropriate amount of impact - a ™ fish weight enhancer into a large container and adding 1 . 5 gallons of water per pound of product at a temperature of from 80 ° to 100 ° f . the slurry formed was allowed to stand for one hour minimum before being added to the pond . the pond water was mixed with aeration devices normally used to aerate the ponds . this procedure mixed the impact - a ™ fish weight enhancer throughout the pond . six ponds were involved in the test . acreage per pond ranged from 3 . 7 to 9 . 8 water acres . three ponds were designated as control ponds and three were designated as treatment ponds . ponds were assigned to each group on a random basis . the treatment ponds consisted of 15 . 9 water surface acres . all ponds contained fish overwintered from 1994 and fish stocked in early 1995 . the records of the farm owner were the basis for fish numbers and fish weight . fish numbers and pounds in the control ponds averaged 19 , 372 and 4 , 788 per water surface acre , respectively . fish numbers and pounds in the treatment ponds averaged 17 , 363 and 3 , 492 per water surface acre , respectively . one control pond had greater numbers and more pounds that the other five ponds . this is the reason for the differences observed in the initial status of the control versus the treatment ponds . fish in the ponds that were treated with impact - a ™ fish weight enhancer consumed more feed and therefore produced more fish . all results reported are the best estimates available . accuracy would be increased if each and every fish were counted and weighed both before the test began and at the conclusion . counting and weighing all fish in a test of this nature is impractical . the data collected from this test is than same as data that the farmer uses to make his management decisions . precise data requires that the product be tested in a small - scale scientific experiments where counting and weighing are practical . fish production in control ponds averaged 4 , 990 pound per water surface acre compared to 9 , 099 in treated ponds . the net increase in fish production per water surface acre is estimated at 4 , 109 pounds , or an increase of 82 % over the control ponds . feed conversion for the control and treatment ponds was essentially the same . fish in the treated ponds consumed 7 , 091 ponds more , on an average , than control ponds . the economic value of impact - a ™ fish weight enhancer based on results of this test is indicated by the difference in additional revenue less the associated costs . revenue from 4 , 109 pound of additional production valued at $ 0 . 79 per pound is $ 3 , 246 per water surface acre . additional costs were $ 1 , 377 resulting in a net revenue of $ 1 , 869 . these results from a field test are sufficient to warrant additional research and development efforts . should further scientific research confirm results within 20 % of this test result , the product could have a significant impact on the farm - raised catfish industry . one problem not reported in the above test results is the problem of a massive fish kill in a pond not reported in the above test . the above tests and further testing will establish that the massive fish kill was not the fault of the impact - a ™ fish weight enhancer .
the addition of a sufficient quantity of organisms of bacteria selected from the group comprising bacillus lentimorbus , bacillus stearothermophilus and bacillus cereus and mixtures thereof to a fish pond increases the production of fish in the pond by over 25 %.