Discolored driftwood, pretty much all driftwood is the same, i should show u a picture of 2 of my tanks, 1 of them is nice and clear and one is murky and they both have driftwood in them. But it's because i'm too lazy to boil it. LOL, well okay all you have to do to make sure it won't discolor you'r aquarium is to boil it, then let it sit in the bath tub or something for 3-7 days, until the water is pretty much not discolored anymore