When my pool has found its balanced range I find that my pH normally falls consistantly as a result of being constantly fed with tri-chlor tablets. Unfortunately simple aeration isn't usually enough to maintain my proper pH level so I use borax to bring it back up. I do have to top of the pool from time to time but since I'm normally aerating TA isn't usually a huge problem after refilling. I will continue as you suggest lowering the TA with muriatic acid to get it back into its normal range. I certainly appreciate your positive reinforcement on all of this. I have been wondering if there is a source out there to buy borax in bulk. Any suggestions?

Thanks again,

Geoffrey