18 months is still a very, very young tank IMO. I’d be interested in you PO4 levels. When I had the worst case of Cyano I’ve ever had, it turned out it was because my NO3 and PO4 levels were out of whack.
Go slow, don’t make drastic changes and keep doing what you’re doing…regular water changes, maintain parameters.
Go slow, don’t make drastic changes and keep doing what you’re doing…regular water changes, maintain parameters.
