So I have a ten gallon tank that has been up and running for about a week now. I'm letting it run without fish so that when I get them it will be set without worries. But the pH of my water is rather high. The fish I want to get prefer around 7.5 and mine is 8.3. So I've read that driftwood will lower pH due to the tannins it releases. I'm planning on adding some to my tank. Will two 6" pieces lower my pH? It doesn't have to be exactly 7.5 but 8.3 is high for my preferance. I've read a lot on pH because I am trying to prolong getting fish until my pH has lowered and is stable there. It's not my filter or my substrate. I have naturally hard water and that raises pH. Really all I'm trying to ask is if driftwood will help me or not. I've tried ph decreaser and I won't use it ever again. I got it down to 7.6 at around 8 at night. Next morning at 7, it's back to 8.3.