I added 1/3 cup to my filter tonight. I hope i wake up to sparkling water. My dad uses DE in his aquarium filters and swears by it. He calls it "water polisher". He told me to mix the DE in a little bit of water before adding it so it doesn't gum up, so I did. When I poured it in the skimmer there was a little grit in the bottom of my cup but I just added a little more water and swished it around and the cup rinsed clean. I will post results tomorrow.

It won't be as great as it could be though as I am battling metal stains right now. I'm doing an asorbic acid treatment on Wednesday though in hopes of having the sparkling clean looking pool.