Thanks for all the suggestions. I guess I will get a Taylor salt test kit and see how the results come out.

It was a strip he used. he put the water and the test strip in some "device" and then took off for awhile. I was not really paying attention until he said the salt was at 5100 and I should drain half the pool.

Is the taylor k1766 (or something like that) the salt test kit to get?

Thanks!
Chris