I HAD cyanobacteria on my sand bed and on my marinepure brick in my sump. I hated it. Peroxide dosing dialed it back some, but never got rid of it. I removed my sand bed last weekend, and there is no sight of it on my block or rock. Sweet!!!
How many people have a bare bottom tank AND have cyanobacteria???
How many people have a bare bottom tank AND have cyanobacteria???