My tank is a couple months old and there shouldn't be any eggs in the tank this early on from the fish. I have two clownfish, a classic and a black and white, just paired together. I also have a Fighting Conch, Two snails with bumpy shells, and a snail that recently and sadly died with a round shell. Went to check on the tank when I saw this green egg/algae/something else in a crevice on one of my rocks. Photos are a little blurry and its under blue light but doesn't glow under white. Also could this be harmful to the tank?