Adrian, welcome to the board. If your new at this, I assume your tank is also new, right? Cyano is often seen in new tanks as part of the "break in" process. Give us some details about your tank and habits, and we'll see what we can do.
Water change schedule?
Nitrate/Phosphate levels?
Flow?
Feeding habits?
Livestock?
Age of tank?
any other details you might want to add.
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Brad
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