Regardless of how much CYA I add, I simply cannot get the CYA level to move up. It's been at 40-50 for weeks, despite me adding alot of CYA. I always add it slowly, and I've added most of it through a sock in the skimmer. Typically 1 lb, dissolve, then 2 lbs, dissolve, etc. I don't know how I could be doing it wrong, but I also have no idea how the CYA level hasn't increased. I've added about 10 lbs of granular CYA since early May.
For all of the test results, I've been using the TF-100 test kit.
I know everyone's opinion of pool store employees, but coincidentally, the pool store guy told me before all of this happened that I could add all of the CYA I wanted and still might not get it to 80. I still want my level to be 70-80 based on TFP targets.
Anyone seen anything like this before?
Here are my log entries from the last couple of months.
Date Tested-by FC TC pH Ca TA CYA Salt Temp CSI LSI