HELP! Made BIG mistake!!

[DaBomb650]

Okay, thanks Steve. Here are my specifics. New (start up was last Thursday) 17,000 gunite/plaster pool.
Test results before adding acid.

Free chlorine - 1.3ppm
Total Chlorine - 1.3ppm
Combined chlorine - 0.0
PH - 7.9
hardness - not run
alkalinity - 227ppm
Cyanuric Acid - 10ppm
Copper - not run
Iron - 0ppm
Total disolved solids - not run

The pool is on an automatic clorinator with tri-clor tabs, and an ozonater.

I added the acid per the instructions (as I understood them) from the person at the pool store that I had my water tested at. She informed me that this would have an affect on the ph and not to worry about that, that I needed to get the total alkalinity in line first, and then adjust the ph. Actually, I added LESS than the report sais to add. It recomended 2 gallons, 3 qts.

The ph after testing with my drop test kit shows 6.8, but I don't know if this is as low as it wil indicate, or if that is what it really is.

What I am woried about is damaging the new plaster.
Carl.