Auntphibian,

The chlorine test (and the tests for TA & CH) offer 2 options - a 10ml sample or a 25ml sample. The marks are on the side of the test vial. If you use a 10ml sample, each drop = 0.5 ppm for FC. If you use the 25ml sample, each drop = 0.2ppm for FC. (10ppm and 25ppm respectively for TA & CH) The 25ml sample will give you a little more accurate reading, but the 10ml sample is probably good enough for routine testing.

If you used a 10ml sample for your test then your calculation for FC is correct (3 x 0.5 = 1.5) but your CC result would be 2 x 0.5 = 1.0.
When you do the test, you should keep adding drops until the color is COMPLETELY clear - not even a hint of pink - or you are not done (have not reached the endpoint of the test). Check out the demo videos on the Taylor website.

You do not need 2 scoops of powder for either the 10ml or 25ml sample - one is enough.

The CYA test takes a little getting used to. After you do the test, you can pour the solution back into the mixing jar and then repeat the test. Lighting is important here. Check out the Taylor demo video.

If your CYA is over 100 and not zero, you will need to add chlorine. Check out the best guess chart under PoolDoc's signature for you CYA level.

Doc, hope you feel better soon.