Cyanuric acid missing

[smileitsachoice]

update
+4lbs baking soda
+3lbs cya
+6 boxes of borax (24lbs I think)
+5 gal acid (borax & acid for borates)
+480 lbs salt
installed a SGS sg3000 swcg

As of 6:00 am this morning
fc=4.0, cc=0, ph=7.0, alk=70, cya=70, salt 4200
aerating water to raise ph as I am waiting on Borate test strips to be delivered. There is one strange thing my cya is testing at 60 to 70ppm but I have only added enough cya to raise to 40ppm. It was testing at zero 6 days after opening pool. First week of opening I didn't add anything but bleach. Water this morning is absolutely crystal clear (the addition of the borates WOW!)

[PoolDoc]

aerating water to raise ph as I am waiting on Borate test strips to be delivered. . . . . Water this morning is absolutely crystal clear (the addition of the borates WOW!)

Aeration will only raise pH if CARBONATE alkalinity is present. You don't have much, except the bicarb you just added. I don't know that I'd worry much about adding bicarb in the future. The only real reasons to use bicarb are to (1) buffer the pool and (2) add carbonate alkalinity on pools where you need a near positive Langlier index (based on pH, carbonate alkalinity and calcium levels). On your pool, with a SWCG, your pH drift will be upwards, and a high borate level will work well for you, so you won't necessarily need the carbonate alkalinity for that. And, since you have a liner pool, you don't need a positive Langlier's or SI.

I'm surprised the borate addition made such a visible difference in clarity.

By the way, thanks for the subscription!

[smileitsachoice]

Ben,
You are correct I had a typo in my sig. Should be 30,000 gals. I am about to change my sig. Love the site and thanks for your help.