looks like sand in pool...

[aylad]

Carl and Poconos, when they use DE in their filters, only add enough to increase the pressure by 1.....I'm thinking they add about a cup, but I'll have to check on that. I would backwash the filter, notice your pressure reading, then add about 1/2 cup of DE and see what that does to your pressure. If you put too much in, you can always backwash it out.

Edit: Here's a link to CarlD's procedure. Hope it helps!
http://www.poolforum.com/pf2/showthr...g+sand+filters

Janet

[CarlD]

Carl and Poconos, when they use DE in their filters, only add enough to increase the pressure by 1.....I'm thinking they add about a cup, but I'll have to check on that. I would backwash the filter, notice your pressure reading, then add about 1/2 cup of DE and see what that does to your pressure. If you put too much in, you can always backwash it out.

Edit: Here's a link to CarlD's procedure. Hope it helps!
http://www.poolforum.com/pf2/showthr...g+sand+filters

Janet

Start with 1/4 to 1/3 cup. Wait 20-30 minutes after adding it and check the pressure. Enough to raise it 1 to 2 lbs, max. If you don't get a full lb increase, add a little more. I use about 1/2 cup myself.

If you use to much you'll see drain and return pressure will drop and the dial will go up. Simply backwash to clear it out.

You'll need to add more DE after you backwash--every time. But don't worry--I'm still on my first 10 lb box after 3-4 years!

[maryberrye]

Thanks a bunch aylad and Carl

[heatherc]

we have trouble with pollen on occasion as well...I find using a skimmer sock works wonders to trap the finer particles.
in regards to sand in my pool, everything is back in order now, new sand and all. Looking forward to nice clean water!

[CarlD]

we have trouble with pollen on occasion as well...I find using a skimmer sock works wonders to trap the finer particles.
in regards to sand in my pool, everything is back in order now, new sand and all. Looking forward to nice clean water!

Yeah, I do the same thing. Skimmer socks and DE in the sand filter are two things that give INCREDIBLE bang for the buck in terms of their effectiveness. If I spend $15/season on both combined that's a lot! Particularly in the spring when the pollen is downright vicious, the skimmer socks make a HUGE difference and you don't have to backwash nearly as often.