Join Date: Dec 2003
Location: Burnaby, BC Canada
I think brown algae grows under low light, or do u mean hair algae?
I had a 5 gallon quarantine/breeding tank without light, it's a bare tank using aquaclear filter and a small heater. It only has 2 fish inside, and I feed them blood worms without water change for about month, and brown algae start to stride.