Sand in Bottom of pool?

[mona_weaver]

thanks so much for the advice.

[Poconos]

On the DE trick, mix in a pail of water first and add slowly like Matt said. After adding a little, check the pressure after 15 or 20 minutes as it takes time for the DE to settle where it should be and the pressure to rise. If the pressure didn't go up enough, add more. Once you know how much it takes then you can mix and dump that amount at once.
Al