I have made a couple of post and read several post about cyano
bacteria and gathered tons of info. And after a few treatments with chemi-clean, numerous water changes, changes in feeding, and adjusting my lighting cycles I recently made a purchase that seems to be helping more than anything. After a visit from a friend that with around 15yrs experience he told me I was getting to much sunlight. I thought he was joking I have blinds up and the tank is in part of the room receiving little to no light. But what did I have to loose so I went out and bought heavy thick curtains and after 3 days of them being up the cyano
is no longer on my rock, and only a few really light spots on my substrate.