I read in BBB for Beginners that dry acid should not be used with a SWG. Why is that? I don't mind switching to muriatic acid (assuming I can safely transport it in my car), but I used dry acid with my Intex Ultra Frame and Intex SWG all last season and I just reopened my pool and have been using dry acid for the last few days. Am I going to have a problem with my SWG or my pool? I'd like to use up what I have, but I suppose if I have to toss it, I will. The dry acid I used was HTH PH Decreaser from Walmart. Also, do I have to keep muriatic acid in a cool, dry place like a dry acid? Because I definitely don't want to bring liquid acid into the house; I'd rather keep it in the garage.