Quote Originally Posted by Infidel
Well, I spent several years as an analytical chemist, I've done many many titrations for alkalinity and hardness, so I understand titrations pretty well. I'd love to have a definite endpoint, rather than a subjective color comparison, being color blind doesn't help. Guess I'll start tracking down the FAS/DPD kit so I know my real Cl levels. I just spent ~$50 on the Taylor kit which I thought would be the answer to my problems.

And after all this, it still bugs me that I can get 2 very different pH readings from 2 different kits.
Well I've just got to get my US$0.02 in here, reading this thread hurts.

Dude, you've GOT to get your CYA down! This is the source of all your problems. Why waste time on questionable pH and Cl readings all because of you having to SuperDuper Chlorinate because of your CYA (which we're still not sure how high it is)? 100+ CYA is absurd!

Don't mean to offend, respect for your tenacity, but wouldn't it really be easier to drain and dilute and have at it?

C.