hair algae, what kind of set up are you going to do in the tank? tangs love to eat the stuff, if the tank is big enough. Or you can take the rock out and clean it off, provided that nothing else is growing on the rock.
It's a 75 gal. tank. Is that big enough for a tang?
This is what I have in it now:
Three Blue Green Chromis
One Black Cap Basset
One Blue Eyed Anthias
One Fairy Painted Wrasse
One Cleaner Shrimp
One Lawn Mower Blenny
5 Astraea Snails
15 Blue Legged Hermit Crabs
One Bubble Anemone
One Percula Clown fish
Small frag with yellow polyps
One Feather Duster
Mushroom Coral Piece
One frag Star Polyps
One Torch Coral (group of three)
