Hi everyone, haven't been on for a bit as I've been busy setting up the sunroom. I have the tank in now!! My question is....my little 20 gallon is getting quite a bit of hair algae in it. There was a guy over the other day and he said to add emerald crabs, that they would take care of the algae. Just wondering about this and if they're safe with the corals? thanks. if you want to see how the room is coming along ..check out my album at www.community.webshots.com/user/honeygrey