jacobraven Posted May 6, 2012 Report Share Posted May 6, 2012 So I run a few tanks on sponge filters but have never really stopped to think is the rating on the filter ie (upto 100 ltrs) mean 1) tanks upto 100ltrs 2) upto 100ltrs p/h flow Ive always been overkill on it eg atm ive got 2 480's in a 2ft fry tank. I was thinking along the lines of tank size but have seen filters upto 1080 which is a lot to handle for a sponge? But then again how can it be flow everyone has different air pumps/ supplies? Link to comment Share on other sites More sharing options...
pk333 Posted May 6, 2012 Report Share Posted May 6, 2012 My opinion. Water changers and substrate vacs are far more important than the size of your sponge filter in small tanks and/or fry tanks. I run sponge filters in all my 2 footers and I've never worried about turnover, even when I have dwarf cichlid 60 fry in one. As long as I do a minimum of two 50% water changes per week and vacuum all the detritus off the bottom of the tank, in the fry tanks, everyone seems happy and to grow well. My breeders, I do a 40% water change once per week. Link to comment Share on other sites More sharing options...
