I'm about 2 weeks or so into my new pool and feel like I have a pretty good grasp on the chemicals and testing so far. But I am a little stumped on my calcium hardness. Initially at fill it was 175. I then bought a couple 4 lb containers of pellets that are meant to raise CH, and then I tested it at the 200 level (1 week ago). Now, I test it again today and it says I'm back at 175...? I thought CH doesn't go down unless you do a drain and refill, or add some other chemical to the water?
My pool is a mini pebble plaster pool and my other members were:
FC - 3
Any help or ideas is welcome...thx y'all!