Just as an update - I have a fountain in our pool which has been on for several days now. Yesterday was very windy here all day - my PH went up to 7.8. I shut off the fountain and lowered the PH to 7.2 using leftover "Lo and Slo". With my ALK at 110 should I add a small box of baking soda to stabilize the PH? I really enjoy using the fountain for looks and for the sound of the water.