DansDad: Let me jump in here since I've been having some stabilizer issues as well.... Once you're pool guy sells you the "correct" stabilizing product, perhaps dose as if you have a CYA reading of -Zero- Most stabilizers read 1 lb of stabilizer in 3000 gallons gives you a CYA level of 40ppm...Based on that math, you would need 4 lbs.
Following the direction on the FORUM and NOT on the container label, place the stabilizer in a tied off sock, and place the sock in front of your pools return...(( You probably will not be able to get 4 lbs of granules in one sock ))... Give the sock a "squeeze" every so often to hurry the process...
After the stabilizer has dissolved into the water, you really need to wait a good 5-7 days prior to testing for CYA to get an accurate read, for it takes that long for the CYA to "enter" the water.
FYI: only ingredient you should see on the Stabilizer container is: Cyanuric Acid: 100%