I have a 90 gallon tank with an aquaclear 110 and aquaclear 70, I did two water changes first water change was 30% and then 4 days later 50%.. The only reason I did that type of change was because my water keep on turning green. I also have a 125 gallon tank and it does not turn green. Whats going here??? Am i having a filtration issue. Can anyone please help, tried searching the subject but kept on getting results for green terrors.. lol thanks in advance for any help.
