Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 7 of 7

Thread: Sand Filter and DE

  1. Back To Top    #1

    Join Date
    Apr 2015
    Location
    Quinlan, tx
    Posts
    811

    Sand Filter and DE

    If adding DE to your sand filter, would you expect your normal PSI to run higher from here on out? If my normal PSI is 10, would it also be 10 when I'm using DE?
    26,000 IG, pebble tec, flagstone, pentair Triton II TR100 sand filter & VS+SVRS 3hp multi-speed pump, Intellichlor IC-40 SWG, Pentair Booster Cleaner, spillover spa, waterfall, Taylor K-2006 testkit
    [It is better to know how to learn, than to know. - Dr. Seuss[/I]

  2. Back To Top    #2
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: Sand Filter and DE

    If you follow the article Pool School - Add DE to a Sand Filter your normal PSI will probably be above 10 and probably 11. And it will rise as it gets dirty, just like it does without it, but faster. When you backwash, it goes away and you need to add more DE.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  3. Back To Top    #3
    Mod Squad YippeeSkippy's Avatar
    Join Date
    Jan 2012
    Location
    'burbs of Augusta, Georgia
    Posts
    6,479

    Re: Sand Filter and DE

    Well, you only want to add DE in small amount that only causes the filter to rise 1 pound more. If you add too much it will definitely make it rise too much.

    Pool School - Add DE to a Sand Filter <--Link to article telling how to add DE to sand filter
    My Amazon Smile for November12K Fiberglass IG, Infinity 4000 automatic cover, SWCG, Hayward Sand Filter, Hayward 1.5 Pump, Doheny Discovery Robot, Savi Melody LED pool lights, outdoor speakers and other assorted doo-dads. Sundance Altamar Hot Tub.
    Our pool build--> Our Pool Solved Our Sloping Yard Skippy's Cheap Pool Cooler -->Skippy's New Fountain

  4. Back To Top    #4

    Join Date
    Apr 2015
    Location
    Quinlan, tx
    Posts
    811

    Re: Sand Filter and DE

    I did follow the directions in adding the DE. I just wanted to be sure that I wasn't backwashing too soon with the addition of the DE so needed to clarify my understanding.
    As usuall, thanks for the help!

    Quote Originally Posted by Richard320 View Post
    If you follow the article Pool School - Add DE to a Sand Filter your normal PSI will probably be above 10 and probably 11. And it will rise as it gets dirty, just like it does without it, but faster. When you backwash, it goes away and you need to add more DE.
    - - - Updated - - -

    Thank you, I did follow these directions so I was just clarifying that the PSI would stay at that level and not go down. I'm not as comfortable with the equipment/techinical decisions

    Thanks!

    Quote Originally Posted by YippeeSkippy View Post
    Well, you only want to add DE in small amount that only causes the filter to rise 1 pound more. If you add too much it will definitely make it rise too much.

    Pool School - Add DE to a Sand Filter <--Link to article telling how to add DE to sand filter
    26,000 IG, pebble tec, flagstone, pentair Triton II TR100 sand filter & VS+SVRS 3hp multi-speed pump, Intellichlor IC-40 SWG, Pentair Booster Cleaner, spillover spa, waterfall, Taylor K-2006 testkit
    [It is better to know how to learn, than to know. - Dr. Seuss[/I]

  5. Back To Top    #5

    Join Date
    Apr 2015
    Location
    Quinlan, tx
    Posts
    811

    Re: Sand Filter and DE

    Another question on same topic? Do you find you need to backwash more often with DE in your sand filter?
    26,000 IG, pebble tec, flagstone, pentair Triton II TR100 sand filter & VS+SVRS 3hp multi-speed pump, Intellichlor IC-40 SWG, Pentair Booster Cleaner, spillover spa, waterfall, Taylor K-2006 testkit
    [It is better to know how to learn, than to know. - Dr. Seuss[/I]

  6. Back To Top    #6
    Mod Squad YippeeSkippy's Avatar
    Join Date
    Jan 2012
    Location
    'burbs of Augusta, Georgia
    Posts
    6,479

    Re: Sand Filter and DE

    I don't notice any additional need to backwash. I *might* only backwash once or twice in 6 months...(my pool doesn't get much in it because of the autocover) but when I add DE the water does seem to sparkle more. And remember that a slightly dirty sand filter works better than one overly-backwashed .
    My Amazon Smile for November12K Fiberglass IG, Infinity 4000 automatic cover, SWCG, Hayward Sand Filter, Hayward 1.5 Pump, Doheny Discovery Robot, Savi Melody LED pool lights, outdoor speakers and other assorted doo-dads. Sundance Altamar Hot Tub.
    Our pool build--> Our Pool Solved Our Sloping Yard Skippy's Cheap Pool Cooler -->Skippy's New Fountain

  7. Back To Top    #7

    Join Date
    Apr 2015
    Location
    Quinlan, tx
    Posts
    811

    Re: Sand Filter and DE

    oh wow! Well we don't have a cover. Our pool is in a rural area, we have lots of trees and debris that gets blown in, plus some dogs that love to play in the pool, and a critter every now and again. I usually backwash once a week, sometimes two depending on the weather. I only backwash based on an increase in PSI and the water is usually pretty dirty when I do. I was just wondering if I needed to be watching the filter more carefully.

    Thanks for your feedback!

    Quote Originally Posted by YippeeSkippy View Post
    I don't notice any additional need to backwash. I *might* only backwash once or twice in 6 months...(my pool doesn't get much in it because of the autocover) but when I add DE the water does seem to sparkle more. And remember that a slightly dirty sand filter works better than one overly-backwashed .
    26,000 IG, pebble tec, flagstone, pentair Triton II TR100 sand filter & VS+SVRS 3hp multi-speed pump, Intellichlor IC-40 SWG, Pentair Booster Cleaner, spillover spa, waterfall, Taylor K-2006 testkit
    [It is better to know how to learn, than to know. - Dr. Seuss[/I]

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •