Well, my TA WAS 70, and after a week of the new SWG running and occasional use of a small fountain my PH had still only drifted from 7.3 to 7.5 so it seemed pretty stable to me. I figured once I had the SWG and my pump runtime all settled it was time to move on to borates. Then the pool guy dumped a whole bucket of baking soda in TA jumped to 130 and now PH climbs fast and was quickly at 8.0 (max reading, so no idea if higher).
I used all the MA I had left on hand, which should have driven it down to 7.0 by Pool Math, but I did get it down to 7.2 and has since aerated back up to 7.8 in a day. More work to do However, reading even more threads on borates now that I was thrown this wringer, I see comments that with the borates TA could go as low as 40-60. Since I have to beat it down now anyway, what do I gain and how do I settle on what's most appropriate? Would 50 or 60 simply result in a slower rise but still a safe level, or if my Ph was pretty stable at 70 TA even without any additional buffering from the future borates should I stick with just returning to 70?
The TA has dropped a little just doing the MA once. It WAS a solid 130 with 13 drops prior, now 12 almost does it but the 13th drop still finishes changing it so it did drop a little. I'll be hauling MA home tomorrow to continue.
On a side note, since I can't add any MA today do I gain anything if I leave the fountain going and drive Ph up even further in the meantime? I'll obviously need more MA by tomorrow to drive it back down to 7.0, but will the additional MA then be more effective or simply wasting it needing more to get to 7.0?
Anyway, no borates for awhile I need the TA fixed, and with the SWG also running more now my FC is impossible to finish getting set for normal run times so I'll also have to finish that first.
Anyway, that's a little novel there, so, lol
1. Appropriate TA and any effects going a little lower
2. Any gain, or just waste, driving PH higher between now and picking up more MA tomorrow