Tft test kits has a standard solution for cya. (Already measured). 50ppm I think. You can use it to check yourself to get comfortable with your readings.
Kate if your reading high or low, erratic, etc. Also you can read your pool sample several times to average a bit too.
is that the TF100 kit or is this another type?
Use PoolMath or Pool Math to determine how much product to use.
CYA powder (aka stabilizer, conditioner, etc) can be purchased at most Walmarts, Home Depot, Lowes. Or pool stores. Typically costs about $4 per pound.
Can you fill out a signature? See Pool School - Read This BEFORE You Post. The information you provide can help us more easily assist you without asking the same questions over and over.
Follow the steps I provided - your summary looks good. And yes, follow the [FC/CYA][/FC/CYA]based on the amount of CYA that will be in the water.
Ok signature updated.
Im looking for the CYA as I type this. Hopefully get the pool running by Saturday.
-jo