Dorkhedeos
Boss Major
tannins may be toxic to fish, but most arent. i personally like having my water a yellowish brown color because it makes the water look like its from a lake.
Great thanks. I will give that a shot next time i go up to any of the numorous lakes in new york and try it out in some small tank with some feeders possibly and see if it kills them. After bleaching it what did you do to make sure the bleach had been completely removed from the wood.