You all might be interested with the thread I started in the china shop called "the great tetraborate experiment". I have a SWG, many water features, and since I have added 50 ppm borates to my water I have been exerpiencing less problems with pH rising as quickly. The experiment is only in it's third week but so far has indicated that the extra buffering system introduced into the water by the borax does help stabilize the pH and might require less acid over the long haul.