Add some DE to a sandfilter

May 14, 2008
20
0
South Central PA
#1
I heard that you could add some DE to a sand filter to improve filtrations
From what I understand you take a 1/3 of a cup of DE mix with water and add to your skimmer.
You do this process untill you get a 1psi increase at the filter. Than when you backwash you
add new DE.

Please comment if this really works or is a bad idea

Thanks
Mike
 

edbson

Well-known member
Jun 26, 2007
72
0
#2
I do it, I add about 1/4 to 1/3 cup to my filter and it does wonderfully. I actually raises it about 3 psi, but that's not alot. When I backwash I add 1/4 to 1/3 again, until the psi goes back up. It filters better, it filters out algae etc faster, and is just all around better.
 

JasonLion

LifeTime Supporter
Platinum Supporter
TFP Expert
May 7, 2007
37,879
5
Silver Spring, MD
#3
Yes, adding DE to a sand filter works well. I suggest adding 1/4 cup of DE mixed into a pail of water to the skimmer, give it five minutes to settle down and then check the pressure increase. Repeat this process till the pressure has gone up 1 psi. After the first time you can simply put the correct amount in all at once (premixed into a bucket of water). If you have a skimmer sock be sure to remove the skimmer sock, or entire basket, while adding the DE.

If you are getting a 3 psi increase in pressure, try using less DE next time.