Tony- didn't you add driftwood to your tank? I may be thinking of someone else, but if you did add the driftwood, has your pH lowered since you put it in the tank? I wouldn't use any chemicals (as mentioned before by bzbee). As long as it's stable, that's the most important. EXCEPT when you have a pH in the 8's. When you are that high, you'll have success with Africans. But, you don't have it that high, so it won't be an issue. If you want something more permanent, just add another piece of driftwood.