Aquapure dead, numbers slightly off and what stabilizer?

[waterbear]

The one thing I learned (that will stick with me) is that since I have an infloor system, my skimmer does not go to my filter so all the CYA I put in just blew back into the pool. The infloor blew it around and disolved it pretty quickly (and I brushed it around as well so it would not bleach the plaster).

CYA will not bleach plaster.

Wondering if you can explain to me why adding acid at 7.6 will use less. I am just trying to understand that.

Chris

If you keep your TA on the low end, which yours is at 70 ppm (and is probably ideal for a SWG system) then by keeping the pH at 7.6 and not lower will result in less outgassing of carbon dioxide. It's the outgassing of CO2 that causes pH rise in a salt system (or any pool, for that matter). This is why we can raise pH by just aeration of the water and is why we use aeration as part of the process in lowering TA. If you have less outgassing of CO2 you will have less of a pH rise or a slower pH rise and therefore need less or less freqent acid additions to maintain the pH at 7.6. I won't go into the actual chemistry here but if you are interested check out this thread.
I have found that adding acid when the pH hits 7.8 and then lowering it to 7.6 is a workable plan. Adding borates to the water in a 30-50 ppm concentration can further help stabilize pH and lower acid consumption with a SWG.