my 3 bits I have tried all the above remedies and I must say the only thing that ever worked or works for me is I put 45 ml of white finger in my 5 gallon top off water(carbon dosing) and I use 1 ml per every 10 gallons of volume water of peroxide everyday till the cyno went away and then once a week as routine and I must say my phosphates sit at .01- .03 and I never have any cyno or any nuisance algae in the past 2 years. Facts speak for themselves in my tank and its a dominate SPS tank and I don't use carbon or GFO and the only thing I dose is 2 part on a doser and read sea colors manual once a week. I do change 5 gallons on a 60 cube with 70 gallon total water volume every 7-10 days I tried every salt under the sun and went back to Kent Marine reef salt about 2 years ago as well.
PS I feed pretty heavy so my fish and corals eat well
PS I feed pretty heavy so my fish and corals eat well


