I have a piece of drift wood (real wood) that i put in my tank with my african cichlids (sp?). I dont have a pot big enought to boil it so i soaked it in a large sink for days constantly draining the water and filling it back up with hot. It no longer colored the water so I thought it was safe to put in the tank. It has now started to grow what lookes like white dense fuzzy mold in large patches. Is this normal? Does it need more soaking? I thought maybe it was just adjusting to the tank but im not sure. The fish seem fine so far. Any drift wood advise would be great!