My PB gave me a Pentair test kit, which tests for FC, TC, ALK, CYA, and PH, and Calcium. It has the test tube thingy with the color comparison beside it. You add drops of the reagents to the pool water in the test tubes, and compare to the colors beside it. Is this kit OK to use? The only problem I see with it is it only test FC up to 3ppm, and I need to run 3 - 6 ppm due to my CYA of 40. Can I dilute my pool water with distilled water and then multiply the result times 2? Am I better off buying a whole new test kit? Or can I just buy a CL test kit that will measure higher levels of FC and TC? I know the test kit Ben offers is supposed to be the best, but if I'm OK using this one, I'd rather wait and spend the money when I run out of reagents.

Judy