Yes, I've reviewed all vids have been testing each day for the last 5. But now, I've hit a problem.

Backdrop...

20,000 gal, 16x32 vinyl liner, sand filter.

I started adding adding CYA at the start of testing since I was getting no reading. Slowly added 3 pounds in the skimmer and was using trichlor tabs raise the amount at a controlled rate beyond that. As expected, the pH dropped as the CYA level accumulated. As of yesterday 5pm, the readings were;
Temp 76
FC 3.0
pH 6.5
TA 100
CYA still less than 30
CC 0.5

All looks pretty good (other than pH) and water nice and clear.

So, I added 15 pounds soda ash per my little pool pal Andriod app. I spread it all around the pool. I also added a 5 gal jug of liq chlorine. I didn't really want to add that much, but the lid was on so tight I could only get it off by prying it with a screwdriver. So I put it all in because it couldn't be reclosed.

Did another test this morning at 5am;
Temp 75
FC 5.6
pH 7.5
TA 170
CYA still below 30
CC 5.2

Came home at 5pm, pulled off the solar cover and saw a white caked layer at the bottom of the pool. I didn't notice that in the morning due to the cover being on. So, I guess I added the soda ash too quickly and stuck to the bottom. The filter ran for 1-2 hours after I put in the soda ash. I guess that wasn't long enough. I brushed it up off the bottom and now there's a cloudy mess in there. Should I be worried?

I took some more readings afterward;
Temp 77
FC 6.0
pH 7.2
TA 170
CC 2.6

Thanks in advance for any help.

Splash