7.2 vs >8.2 Grrrrrrrrrrr

[Infidel]

Thanks for all the info. Here's some background:

Alk 120 (consistent with reading 2 wks ago)
Ca 350 (consistent with reading 2 wks ago)
CYA ~100+ from reading tonight, has been reading 72-80 last 2 wks
pH 7.6 OTO / <7 Taylor (as of 2am Texas time)

Cl is being read from the Taylor at 1:5, color is usually between the 3 and 5.
I'll grab a pH meter from work tomorrow and start checking the "real" pH and see what method is accurate. I use the K-2005 kit from Taylor.

Are you sure 6-8 ppm is suitable for lime green pool with CYA ~80? WIth regards to consistent concentration, I'm unable to distinguish between the 3 and 5 (15-25 ppm) on the color comparator, so if it's yoyoing, it's doing it between 15-25, which should be sufficient to keep things killed, even at the low point in the cycle, correct?

The pool is looking less green since adding acid 4-5 hrs ago. The low pH should be increasing the %hypochlorus according to Duraleigh's excerpt, which appears to be occurring. So, algae in spite of high Cl, may indicate pH is elevated and the active Cl isn't present in great enough quantities it sounds like.

Are phosphate / nitrate commonly performed by pool stores?