I made and improvised filter out of four old socks to use in combination with my venturi vacuum and debris bag. I simply put the socks, one inside the other, and tied them around the outside of the debris bag. I vacuumed all the brown stuff up a week ago and it still has not returned. (Previously, it had been coming right back after vacuuming. Most of the time within 12 hours.) The sock on the inside, the first filter if you will, was almost completely brown after vacuuming. The socks got cleaner and cleaner as you worked your way out.

I have added 3 cups of Borax so far and let it mix in for a couple of days each time. It has changed my ph from 7.2 to maybe 7.3. I added another cup or so over the weekend and plan on checking it tonight to see where my ph is now. It seems like I am having to add an awful lot. The Pool Calculator said I only needed like 11 fl oz to raise it to 7.5. I am now at around 16 fl oz. Twelve ounces hardly made it change at all. Maybe I did something wrong on the calculator. Anybody know how much I should have to add?