Don't worry about the discussion above between waterbear and Ben, they're making it sound a whole lot more complicated than it really is. Just keep it simple: Yes, you need to add some CYA, either in the skimmer or in a sock or stocking in front of your return, and remember not to retest or backwash for a week or so because it takes a long time to dissolve and show up. How much you need to add will depend on your SWG instructions. And yes, keep adding bleach until you get your chlorine under control. As far as pH goes, if you're between 7.0 and 8.0, you're basically okay--the general consensus is that the lower you are on that end of the scale, the more effective your chlorine will be.......but then again, my pool "likes" a high pH so I don't try to fight it.

Hope this helps!

Janet