So I got my test kit and had the following results:
FC: 18 ppm
ph: <7.0
TA: 75
CH: 175
The chlorine is way high and ph is low.

So I took a water sample to two pool stores. The first said my FC was 1.9!! The second said "high" and that my ph test would not be accurate with such high chlorine. I backed my chorine system way off. (cartridge filter with continuous chlorine (3inch tabs).

I looked at the "sand" It is defenitely from the pool finish. The Taylor iinformation said low ph will etch the finish.

I'm going to get my chlorine level down and redo the ph test.

John