Duke of Distribution: We are using tabs to chlorinate. We were forced to drain both times due to high levels of CYA. What those levels were - I don't know. I left it up to my pool service company to test the CYA, but apparently they were not doing that. I feel as though I've been duped.
Wizard of Water: Thank you for your information. We have a 26,000 gallon pool. I feel as though we've had good dilution. There was a time when I was adding fresh water to the pool on a weekly basis. In addition, the pool is backwashed weekly. Unfortunately, my research came from trolling the internet, which is what landed me on this website. I was not trying to project it as the end-all, be all. I came here for guidance.
In any event, I am looking for a new pool company this week. Something seems fishy on more than one level. Thanks for your help. If anyone has anything more to add, please do so!