dragonfish;2001938; said:Keep doing water changes, get used to the color or try Seachem Purigen.

The wood doesn't stop leaching tannins. It will continue doing so for years although the amount of tannins leached gradually diminishes over time.FishGoneWild;2002253; said:Take the wood out and boil wood in water for 2 hours. Otherwise the yellowish tanin will stop leeching out after six months.