I've had some driftwood in a 29 gallon tank since March. It is covered with algae and the gouramis love it. I'm gonna break down this tank and use it as a QT when I set up my 180 gallon tank. The 180 will house Lake Malawi cichlids. I'd like to put the driftwood in the 180. Will the driftwood acidify the water even after being in this tank for several months? It is just 2 small pieces, one piece is 16 inches long and 3 inches at the base while the other is 10 inches long and 2 inches wide at the widest part. They are vertical pieces and they have rock bases.