cyano bacteria

Hello all, I have red slime on my sandbed, and I also have corals on the sandbed. I’m just wondering if it’s partially on them, will it end up killing them? I have a plan to get rid of red slime by doing a 20% water change, clearly out back chamber where food gets stuck (I have a biocube), and...

I have a newly cycled 96 gallon tank that is being stocked with mostly dry rock, some live rock, and a few liters of siporax. I plan on stocking the tank with a few choice pieces from my 40 gallon AIO tank. The issue is the 40 gallon has a bit of green cyano in a few spots that receive lower...