1-2 ppm every 2-3 days when weather is fair.
Light bathter load, CYA <30, 24K vinyl IG 18x42, outdoors, full sun from 10 am til about 4 - then the shadows draw longer. Pucks at start of season, bleach only now. Alk has held fast between 70-80 since opening in mid-May, pH around 7.5 as far as I can tell. Having problems decipjering color endpoints on the pH test with my K2006.

Was very hot yesterday & today, had 3 kids over yesterday. Added 3 qts plus 1.46 galls belach and a lb of Borax last night. FC was 8, CC .5. Today at 3 FC=4, CC=0, all others the same. H2O temp of 86 with no cover.