Amato sells the reagents and has been a great place for me...

Here's a link to their site:
http://www.amatoind.com/taylor-testi...s-c-30_35.html

For the CYA, put it in a old sock and hang it in front of a return jet and it will slowly dissolve. You can even squeeze on it every once in a while to help it break down. It will take a while to get in the water and show up on a test. I'd add 3/4 of what you think you need and then wait a week or two and test as you can always add more but removing it means a partial drain and refill