How long has the tank beenup and running? As the tank matures, it will go through several stages of algae blooms. Cyano is more of a bacteria. I think some people say that most new tanks will get some of this. However, let me warn you. If you do not take steps to get the cyano under control, it has the potential to take over your entire tank. It spreads very aggressively and quicky. Are you sure that it is cyano? What is the flow like in your tank? Cyano likes to takeover in places with low flow.
Marinemom
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