I may be assuming too much by the math, but my cya was about 90...so I dumped appx 6700 gal ( 896 cubic feet) of water and it shoud have dropped it appx 20 points to 70......shocked at 15ppm until zero loss overnight. Then I was maintaining appx 10ppm and when I check it again at the end of the day it was down to 1ppm early this evening..
I am waiting till I get my refills to check cya again.......
I am waiting till I get my refills to check cya again.......