I am fighting this in the sand bed. it's a year old, and this stuff was brown...now it's GREEN,
that's what I am thinking about doing. the colored stuff though, was brown. ? it's in a mat type way, not loose. idk I just was thinking I'd try your method, and see...but if you dont think I should I wont. the rocks I will, but I'm worried about my corals on them. I had a good CUC but I also have a Valentini puffer... ;ShyReal reefs get those growths it doesn’t mean anything is bad with your water, that algae may enjoy the bright lighting we supply and lack of matched grazers to control it, among the hundreds of options for ridding algae online ours is a method of direct access cleaning
what about siphoning up the sandbed growths, replace back with rinsed sand taken during the cleaning. the rocks can be lifted out and applied with peroxide externally that will kill off algae, both are physical cleaning actions
reef rx is fluconazole I think. That's been known to cause cyano issues in the fluconazole work threads, that appears to be the case here as well.