Thanks so much for the feedback. That is kind of where I was headed. Do you know of any good deals with frees shipping and handling? I have one pool place that is in my area that I believe I will get it at tom. for 9.99, that seems to be an okay price around here for 50 lb. When do you put the DE in and how? Thanks so much! and YES I am so glad I changed, and REALLY wished I had done it a LONG time ago! I also read some of the posts on the CYA and the sock. I was told to put it in the skimmer by the pool place, but he said to do it slowly, that bothered me. I have learned to ignore and not ask them! I ended up doing the two socks and it was wonderful!! One at each water return, and by morning they were empty. I truly believe that is the way. At night you could see it dissolving slowly in the water. I am so much more comfortable with that way. But, hey what do I know? Thanks WaterMom! The first time doing I did the socks and put just a small amount in the skimmer, but will stick to the socks!