Quote Originally Posted by Pezoneden View Post
thats what i ment grout sponge not drywall sponge duh we actually use it more for drywall than grout though lol
Yeah man....those sponges are killer. I always keep 3 or 4 laying around. And btw, the mold on the coconut shell will go away in a couple weeks. It won't harm anything in the tank. It sometimes happens to things like wood, coconuts and the like while acclimating to a high humidity environment.