Just looking for some ideas. I get cyanobacteria no matter what I do, I have a refugium, cheato grows like crazy, I run phosban and esv carbon, have 2 ecotech mp10s, and do a 10 percent water change weekly, I have a reef octopus skimmer, all in a 50 gallon tank. I feed fish every other day one cube of brine shrimp or mysis. Why the hell do I still get cyno? Tank has been running for 4 years.
Last edited: