We have a SWG and I have to add about 3-4 cups of dry acid each week, usually 2 cups about 2 times a week. I don't add it all at once. I let the pH get up to about 7.8 then drop it to about 7.4. I was reading some other threads about dry acid adding sulfates. What is the result of sulfates in pool water. I can't really find any info about it anywhere. Should I consider switching to muriatic? I am kind of nervous about the liquid. How exactly do you go about adding the muriatic? What will I need, how do I mix it, how do I add it? Should i correct the pH differently than I do, start sooner and take it lower? Thanks for any info.