When I started this whole process a few days ago my CYA was close to 90. I would estimate that I have had a 4-5" water exchange ending in 2 inches of rain as of this post. Is it possible for me to loose 10ppm of CYA with that?
My evening test results are
I ran the CYA Test 4 times (dumping and refilling the tube)
Everything else seems good, is this possible with that little water exchange?