So I'm about 10 days into the borate treatment. I got my PH to 7.6 and TA to 80 just before leaving town for a few days. I was gone for 5 days and upon my return yesterday, PH was at least 8.0 (that's as high as my Taylor test kit goes) and TA was 90. Borates were still 50 using Lamotte test strips. Treated with MA last night and PH is back to 7.6 and TA is again 80.
I realize that conditions vary in every situation, but is there any reason anyone can think of as to why the borates are not helping stabilize my PH? I have a fountain in the spa (always have had it) and added a cooling spray fountain at the other end of the pool this summer to try to keep the temp down (which has worked by the way!) So far, nothing has changed. PH still drifts up every 2-3 days as it has ever since I had the pool built 4 years ago. Borates aren't doing anything to help with the PH drift, but at least my water is crystal clear!
Any input is appreciated!