I got a piece of Malay. driftwood that in my 55 gallon tank with my jar. I am starting to see some sort of hair on it. It about half an inch long to little spot, and it black. Looking like human hair but i think thinner, could also look like the fan built up dusk type of thing. Bought it from a store who said they sandblast clean cook it whatever on the list. What is the problem and how can i get rid of it. Thanks. Plus no other fish are in the tank just the jar at about 8 inch, with sand substrate and fluval 404 canister.