Does any one have a conversion form pond filter capacity to fish tank size capacity. for some reason I have had a lot of trouble with ick in some of my fish tanks and have been loosing a lot of fish. I think it was because they where in temporary tanks set up to grow the fish out till I get the 625 set up. and they did not have a lot of filters in them. I currently have a TetraPond Bio-Active Pressure BP4000 Filter that is rated for 4000 gal pond. I have it set up filtering a 65 gallon tank at the moment

With the amount of trouble I have been having with ick I am considering getting a second canister filter. I do not want to deal with non pressurized under the tank systems.