Hi all Ive had a 55 gallon saltwater tank for several years now. Right now I have a fox face and clown fish and a coral beauty in it. At one point I thought about making it a reef tank and got some live rock. I decided not to take it a reef but left the rock which ended up having a lot of different hick-hikers on it. I didn't mind but ended up seeing this red algae all over about a year ago and its a pain to scrub off. Someone told me its Cyanobacteria so I got Chemi-Clean I was just wondering if any of you guys have used it. Are there side effects it doesn't mention and most importantly does it matter. By that I mean its a pain to clean but other than that it doesn't really bother me is it bad to just left it be?