We just purchased a fishtank and put african driftwood in it. We noticed that the pH was a little high so we added some of this 7.0 pH balancer and the pH balanced out. Today at the petstore one of the associates there said that African driftwood raises the pH rather than lowers it like most driftwood and that with it in the tank we would be limited to fish who like the higher pH such as ciclids. I can't find anything confirming this online. Has anyone heard anything like this?