in your Using Muriatic Acid to Safely Lower Your Pool's pH article
http://www.poolforum.com/pf2/showthread.php?13111

you say "We usually recommend hydrochloric acid, called "muriatic acid" when sold for commercial purposes, for use instead except on very small pools."
what should i use in my 12'X30" intex pool in IL
I followed the startup guide but now I have PH of 8.4+ and TA 240+-

should I use ph minus or other "pool chem"

thanks