Re: dirty white sand I have the exactly same problem in an aquarium that I was settin up, I have white sand in the front, and since I started I got the sand cover, first for a yellowish snow looking layer and I believe was a kind of fungus and there after for a brown layer that I believe was an algea, all this during the cycle process. After several water changes and syphoing, I drop a bag of activated Charcoal inside the aquarium with a dosis of bacteria AKA, and not only got rig of dirty looking in my sand but also got my water really clear. I haven't had the problem again, at least not that critical as I had it initially. |