yeah, but you gotta boil the wood to get rid of most of the tannins. rinse and boil about 5 time for 20 minutes each. Then do a 30% water change. Then add carbon to your filter. If you use a cannister filter, then cut the let of a old stocking, rinse it, then add the carbon inside the stocking and tie a knot. This can be placed in a tray in the filter.