As for the cyano. It does try to smother the corals. I'm watching it closely to clean it away from the rocks. And sometimes I have to help the Nessarius snails stir up the sand abit and clean it off. But I do want to help pulling the cyano out. It competes with the healthy bacteria for nutrients. Plus it looks ugly.
I do want to add more sand to the fuge though. I have about a cup in there. More would be a good idea
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