Diatomaceous Earth versus Sand filter

[medfordman]

I just moved and now own a pool with a DE filter. Lately I have had a pressure problem. Could low DE cause low pressure? (I don't even know if this makes sense).

How often should the DE be changed/cleaned?

[matt4x4]

Debs - I'm not carl either, but just to let you know, those of us who do use DE as a supplement in the sand filter do so by adding 1-2 cups of it through the skimmer - your pressure should change by about 1.5-2 lbs - this shows you have loaded it with enough DE.
I would do this when you are ready to start cleaning up all the dead algae - you will get your pool clean much quicker.
Pre DE, It took me about 3-4 good vacs to recover from a bloom, now, 2 will do it, and the second is more a final spot clean than anything else. However, my backwashing increments increased proportionally!
You will find that you will only be able to vac about 1/3 to half your pool before you have to backwash - this is a good thing, it shows and proves that adding DE works well.

[CrisL]

Putting a little DE in the sand filter can help clear the pool when cleaning up the algae. Dead algae is very fine and it sometimes takes a long time for a sand filter to clean it up. A little DE in the filter should help catch the dead algae. Simply put a cup or two in the skimmer. Watch the pressure. It may rise rather quickly as it catches the small dead particles. When you backwash, the DE wiill be backwashed out of the filter. If you want, you then add a little more.

[papa6]

I live in Des Moines, Iowa and have no complaints with my sand filter. My brother-in-law on the other hand lives in Las Vegas and asked me which would be best for him (DE or sand). How big of a role does climate play into this decision. Sand works great for me in the midwest, but what seems to work better in the desert?....or does it matter? Any input on this would be greatly appreciated.

Thanks