i know this sounds odd, but i had a huge algae bloom and cyano popped up everywhere not even a week after i started using Red Sea Coral Pro salt. Me being tight and buying 55 gallons worth of salt i used it all while siphoning and pulling both cyano and gha out for a long time. Tons of flow, replaced bulbs did everything i was told to get rid of the mess and nothing changed. I recently ran out of salt and on my way to IU ohio state game, i stopped in at petco and bought Instant ocean reef crystals. 3 water changes later and the cyano completly gone and gha is only in two spots and is receding. same exact water source, same exact mixing buckets and equipment. I was always suspicious of the Coral Pro salt, and now im almost positive it was my problem. By the way my rose bubble nem is probably doubled in size in about two weeks, gotta love that!