Discussion Starter · #1 ·
I just upgraded my lighting from dual T8's to a Catalina single T5 HO on my 55 gallon. I was told on another forum that my its so much of an upgrade that I will have an algae farm if I don't use excel or use co2. I wanted this to still be a non co2 tank and just dose flourish weekly. It will be an open top heavily planted. Is this guy correct with his statement?