Filter sizing?

[stlbill]

Hi folks:

I have a 19,000 gallon in-ground pool with a 1.5 HP 70 GPM pump. The chart on In The Swim states I should get a 36 ft^2 DE filter. If I can afford a 72 ft^2 DE filter is there any harm that could result?

[PoolDoc]

It's what I'd do -- your filter will go longer between cleanings. The only downside is that it will not backwash as well -- but my experience is that DE filters NEVER backwash all that well, and that it's usually better to break them down and clean them by hand if possible, at least 1x per season.

[stlbill]

Hi PoolDoc:

I purchased a Hayward DE7220 this weekend. It will be a few weeks before opening. I'll post my findings for the benefit of anyone else considering a filter change.

Thanks!

-Bill

[PoolDoc]

This one?



Yes, please post your results.

(And, if you haven't already, grab the manual, etc from here: Pro-Grid™ Vertical Grid

[stlbill]

No. This is a picture of a Hayward cartridge filter. I have a DE7220 de filter. Actually I have an older 200 ft^2 Hayward cartridge filter connected to the pool and a Hayward de filter waiting to be installed.

[PoolDoc]

Then, this one:


That's a Pro-Grid; the first one is a Pro-Vertical Grid, from this page: http://goo.gl/Bf4ni