I had cyano
two months ago and used chemi-clean. It worked like a charm, but I again have cyano
. My phosphates are down to .5 and nitrates are at 20, still the bacteria. I'm thinking I need to increase flow in the area it seems to like to grow in, it's the same as last time. I would definately get the problem fixed so you don't keep getting it, as opposed to relying on a quick fix, and be in the situation I'm in now.