Quote Originally Posted by waterbear View Post
Sodium percarbonate is another way to clear a badly fouled pool. It makes everything float so it is easy to scoop out and oxidized the sustpended stuff to clear the water. It does raise pH so hyou need to add acid with it to keep the pH in line.
That's an interesting one. Percarbonate is the principle ingredient in color safe bleaches. (The other principle ingredient is another old pool friend, sodium carbonate.) I remember seeing it at a chemicals store I've used for photo chems: http://www.chemistrystore.com/search...+to+Search.y=0

It sure would be a lot easier to scoop off the top than the bottom, like with alum!

Any info on dosages, downsides?