My pool water looks good, clear blue. 21' round, 10,400 gallons?, vinyl liner, and 300lb sand filter.
fc 3
cc 0
ph 7.6
ta 100
cya ? I added 3lbs, about 3 weeks ago, and haven't tested it, yet.
I have been adding 43oz of 6% bleach every evening to keep my chlorine in the 3-5 range. Does this...