Originally Posted by
OCC Aquarium
90% daily? Isn't that stressful for the fish?[/Q
Depends on your water quality, your systems ability to clean your water and by system I mean your tank pumps and substrate and how it all interacts. I couldn't do 90% daily water changes, but i have a 450gal tank that has 7 discus in it. I do a major water change once a week and another weekly water change that is minor. Major is around 100 gallons and minor is half that, i also have driftwood that will soften water as well as a deep sand substrate. Tank mates include 3 plecos and 100 tetras. My water parameters are amm=0; nitites=0; ph=6.6; nitrates= 5...