On Monday June 28 tested using TFT Test Kit and got the following readings;
Just to verify took sample to pool store and my readings and Pool Store were right in-line except for CYA they showed 19. AT their suggestion I added 3 lbs of stabilizer waited 12 hours, tested CYA again and I show about 55 CYA, then shocked 2.5 lbs turbo shock.
For the past several days of monitoring chlorine I still get no chlorine readings using either the quick test or the drop test.
23,000 gal vinyl in-ground pool
1.5 HP pump