I have a Taylor K-2006 Test kit That I have been using the past two seasons.
The only tests I have used my kit for are FC, CC, pH and CYA.
My most recent numbers are:
Water is like glass. Absolutely crystal clear.
My pH never fluctuates (I test the pH about once a week) and the only thing I ever do is add bleach on a daily basis after testing. I test chlorine daily. I use 6.0% Clorox bleach for chlorine.
Is there really any need to use any of the other tests in the kit for any reason?