Hello,

21,500 gal, IG pool. Just got a new K-2006 test kit and here are the test results:

FC = 4.4
CC = 0.2
pH = 7.4
TA = 150
CH = 560
CYA = 200+ (I'm guessing here. It's way beyond the scale)

Fill water CH = 60ppm.


From what I've read, the most recommended way of lowering CH, and CYA, is to drain and refill. But, somewhere else on this forum I read a post by PoolDoc of another way. I can't find that thread now. So, what's the best/cheapest path for me to take?