OK, so I've been running on the SWG for a few weeks now. Still getting it dialed in. This past week was cloudy and rain on and off, so my FC consumption dropped, and my FC level spiked up over 10. Dialed back the SWG a few notches and now it's down to 6.26. Took me a few days to get there though.
The thing that I can't get dialed in is the TA and pH. When my FC was high, I dumped in 32 oz of acid according to pool math and that did indeed get my pH down to 7.2 and my TA down from 116 to 74. However, both have continued to drift up. pH just went from 7.8 to 8 over the weekend and TA is now back up to 108.
FC - 6.26
CC - 0
pH - 8
TA - 108
I don't trust the Color Q for the CYA test, as I've never gotten the CYA above 50, and it has shown a drop - now at 32. I have ordered a TF 100. I have put in about a quart of liquid CYA and am hesitant to put in more without an accurate test. Easy to put in, tough to get out!!!
In any event, going to put some acid in tonight, but what could be causing such a quick rise in pH AND TA? is it the low CYA? The FC spike?