I was going to post a similar question- My CYA was 60 on May 11, it is 20 today. I live in az, but it has not been too hot yet, very little apreciable rain, and not much splashing water out of the pool, yet. I do have an automatic leveler, so there could be a leak (pool < 1 year old). I though that when my salt level dropped a few moths ago, but it stayed at the same level over several weeks. There is a water feature which splashes some water out, running most of the time. do I need to worry?