Coral Help!

Reeferburns · Jul 1, 2020

Hi, I’ve been noticing green stringing looking stud coming from all my corals or getting stuck on my corals. Would anyone know what this is, how bad is this and what should I do to treat this problem thanks! I’ll leave pictures but it may be hard to see. I wanna say it’s like mucus but I don’t believe that’s what it is but I could be wrong.

dhanking · Jul 1, 2020

It is algae. Green Hair Algae. I am sure there are chemical killers for it but killing it off naturally would be better. You can feed less food, lower the light’s strength, or buy a fish that will consume the algae. Tangs, Lawnmower Blennies, and some angelfish all consume GHA. There are also some invertebrates such as crabs that eat hair algae.