D.E. Filter problem

[kathgilliam]

I don't get it. When you backwash, doesn't the sand go down the drain too? Or is the sand inside of a cartridge?

How much is installation of a new filter? We are not interested in doing the installation ourselves, and I'm sure if you have read any of my posts heretofore, you would agree that this is a wise decision.

What's an Intex donut?

If your dad had D.E. for 20 years, doesn't that speak to a good D.E. experience?

What's a good brand, or does brand not matter in filters?

K