rokcrawla
Aquarium Advice Apprentice
My 55gal tank finished cycling about a week ago and I added a clownfish and a damsel. There is only flourescent lighting on it for now though I am in the market for some power compacts. I have noticed a brown precipitate collecting on the rocks and sand. At first I thought it was algae but I was relocating a powerhead and it blew on the rock and the stuff wash off. Any idea what it is?