I have a 125g mixed reef that's been up and running for two years. The tank has a medium to heavy bio-load. I've been experiencing a massive bloom of cyanobacteria. I've been dosing Red Sea NoPox for years to keep my nitrates low. The Nitrate is at 10 ppm, which is not high, but not as low as I would like it. I've seen tanks with much higher nitrate (over 50 ppm) and yet SPS corals grew like crazy. The first step that I took was to use ChemiClean, which is designed to eradicate Cyanobateria. I turned off the protein skimmer for the duration of the treatment. As per the instructions, I did a water change (36 gallons) after 48 hours of introduction of the ChemiClean. This did not seem to even slow the growth of the Cyano. I then used Reef Flux, which I have used with great success on GHA. Reef Flux normally takes 10 days to 2 weeks to run it's course. It's been nearly 3 weeks since the introduction of Reef Flux into the system and still no change. Everyday I used a turkey baster to blow off the cyano from corals, rocks and substrate.This only seems to make it worse, and within hours, the cyano returns with a vengeance. Not counting the dual returns, I have DC controlled power heads on each end of the tank. There is more than adequate water circulation. The Cyano is smothering and killing my corals, especially the SPS. The Cyanobacteria is out of control and I'm at my wits end! I don't know what created the cyano outbreak or how to eradicate it. Not that it matters in this case, but the Alkalinity is 8.4 DKH.
Any and all comments and suggestions are appreciated.
Any and all comments and suggestions are appreciated.