Your TA is too high. Read about how to lower it and using muriatic acid safely here: http://pool9.net/alk-step and http://pool9.net/muriatic/

Turn your SWCG off for now. Shock the pool and keep it high until you can go from sundown one evening to within an hour of sunrise the next morning with no more than 1ppm of chlorine loss and you have no greater than 0.5ppm of CC.

Also, run your pump 24/7 while you are working to clear this up.