Checking back in. Got my TF-100 test kit, did my first test. Results are:
CHLORINE - .5 (yikes)
ph - 7.5
FC = 1.0
CC = .5
TC = 1.5
TA = 160
CYA = 80
CH = 100
So...obviously the CHLORINE needs to come UP -according to the pool calculator my TA and CYA need to come down. Yet- Pool School says don't lower the TA just to get close to some number ...? I can swap out the water to lower my CYA which begs the question.....
1) swap out the water THEN add the chlorine....?
2) what is reverse osmosis water treatment?
Ugh - feel like I'm chasing my tail. Not sure which to tackle first or how.
20 x 40 ft, 36,0000 gal in-ground pool, vinyl lining HAYWARD self priming super pump; HAYWARD S-200 high rate sand filter, TF-100 test kit