What are these fuzz balls? Tank was a mixed reef now just inverts, LR, and corals. Bought a fish that infected other fish with ick so they are all in hospital tank. To get all the fish out I had to take all the rock out so it stirred up the sand bed.
In the last week these started to show up in the overflow box and side of tank.
In the last week these started to show up in the overflow box and side of tank.