Test results from Tokyo Institute of Technology
Freshwater fish
Test results after 420 days without a water change
Fundamental difference in anaerobic bacteria activity
The difference in nitrate change is particularly significant. (The unit of the nitrate graph of the comparison tank is quadruple that of the test tank.)
This indicates that there is virtually no anaerobic bacteria activity in the test tank. On the other hand, totto-filter achieves very efficient nitrate removal (denitrification).
18 fish still alive after 16 months without water changes
The fish in the comparison tank completely stopped eating from the 36th day and several began dying every day.Conditions were deemed unfit to support life on the 42nd day and the test was stopped. On the other hand, 18 of the fish in the tank using totto-filter stayed alive over a period of 16 months without a single water change.Moreover, they grew from larval fish into mature fish, a result that overturnswhat was common knowledge about filters until now.
*The collection of test data ended on the 420th day, and the fish continued to live on thereafter.
Marine fish
Test results for 361-day period without water changes
361 days without water change
Twelve fishes and eight shells were kept alive in a tank using totto-filter for a period of 12 months without a single water change. (Three damselfishes died due to the stress of the population mix, fights, etc., and were replaced). These results overturn what was common knowledge about filters until now.
*The collection of test data ended on the 361st day, and the fish continued to live on thereafter.
Denitrification through anaerobic bacteria
In conventional filters, the concentration of nitrate in the water gradually rises and the pH tends to become a acidic.As a result, such aquariums require a water change every 2 or 3 weeks. By contrast, totto-filter achieved a constant pH value from the 42nd day on, with almost no fluctuations thereafter. This proves that pH level stabilization and denitrification are achieved simultaneously and that the water is fully cleaned with this system.