Hi, Pat,

Your CYA test method is correct. You must have some left over from last year.

90 is okay for your Alk.

You need to shock your pool. Bring your Cl up to 15ppm or slightly more. If your water is clear, (I assume it is now) then yu can let it go back to about 3-6ppm. The CC of 1 indicates you got something the chlorine is working on. The shock level of 15-18 will take care of it. Great kit, isn't it?