I am interested in doing this as I saw the how-to section in the Pool School. A quick search yielded some results that suggested some people have had success, but there may have been other factors.
What I would like to know is if anyone without other problem factors (such as poor circulation, poor water maintenance) has had any success with this.
As I've said in other posts, I have yet to have a trouble-free season, but I have at times had the water so sparkling clear that you could count the little dots on the liner. Of course, these clear times only lasted a few days or a week (due to my poor maintenance), but even then, there was always this thin film of dirt and other fine particulates that got stirred up during pool activity, and refused to be filtered - they would naturally migrate in large clumps in dead spots of the pool and I would set the vacuum down right on top of them, and watched the returns as they just came right back out into the water.
Shouldn't the DE help in such a situation, where my sand is definitely not channeled?
On a side note, I have pretty fantastic circulation for the irregular shape of my pool (only two dead spots where particles congregate outside of the swim-out and steps), a SWG supplemented with an automatic feeder, a paramount "turnover system" that cycles the wall returns off and two floor returns on every 5 minutes, and two drains at the bottom of the deep end.