I checked into R/O & we don't really have that for pools out here. For drinking water yes, pools no. I've ordered a test kit, and in the meantime, started the draining process. I drained off 8" last night & refilled. I'm about to take a new sample into the pool store to see if my CYA went down at all. I tried doing this the "diluted" way--1 part pool, 1 part bottled water, and the pool store people freaked out. They said they've never seen such high alkalinity, (230) and couldn't get an accurate measurement. They said the sample was "too cold." So today, I'm going to try with 1 part pool water, 1 part room temp tap water.
Also, in the meantime while waiting for the test kit, should I be pouring at least some bleach into the pool?