Who Gives A Fish Forums

Algae's a pain, but you gotta tackle it from multiple angles. What's your nitrate level? High nitrates feed algae like crazy. Also, what kind of filter are you running? A good canister filter with proper flow helps. I'd recommend adding some floating plants like Frogbit to outcompete the algae for ...

My 20 gallon tank has been overrun with green algae lately. I've tried reducing light to 6 hours a day, but it's still spreading. Anyone got tips that actually work?