Quote Originally Posted by OahuGuy View Post
I saw the BBB chart in the forum, but am not clear on how to interpret it. I know it's all based on CYA levels, so knowing that seems a first step.
Once you know your CYA level, you need to keep your chlorine between the minimum and maximum value listed in the Best Guess Chlorine Chart. And, if you have an algae bloom, the shock level needed to kill it is also based on your CYA level.

Quote Originally Posted by OahuGuy View Post
I plan on buying the Taylor kit, and supporting the community, just curious to understand the diff between it and the 5-stop one I have. Is it the ability to test CYA?
The 5 in 1 kit cannot test for CYA. Also, that kit can only measure chlorine levels up to 5ppm. The Taylor K-2006 or 2006C (better buy), gives you the ability to test higher chlorine levels. Do yourself a favor and go ahead and order it. You won't be sorry.

Welcome to the Pool Forum, by the way!