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Thread: Backwash and adding DE

  1. Back To Top    #1

    Join Date
    Jul 2011
    Location
    Surf City, California
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    24

    Backwash and adding DE

    My pool is less than a month old and I am ready to add salt to the pool and turn on my Salt Chlorinator. I would like to backwash before doing so, how much DE do I put in after backwashing? How much salt do I put in? What setting should I start with on the Chlorinator?

    Currently my pool is setup for chlorine.
    25-30K Gallon Inground Pool and Spa
    DE-Filter system 60 Sq. ft
    Salt Chlorine generator
    Pebble Bottom
    Variable Speed pump

  2. Back To Top    #2
    Melt In The Sun's Avatar
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    Oct 2009
    Location
    Tucson, AZ
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    Re: Backwash and adding DE

    It's too early for the salt! One month is the minimum for that. As for backwashing and adding DE, the amount should be listed in the manual for the filter (and maybe on the DE bag...not sure). The general rule is to add 80% of a full load of DE after each backwashing, since not all of it comes out.
    11,200 gal, Pebble-Tec; Tristar 2-speed 1hp - Swimclear 325 ft2 cart - SWG - A & A in-floor cleaner - Heat pump. For the poolside cooking, a Yoder Wichita and a Big Steel Keg!
    TF Test Kits -- PoolMath -- Pool School
    Make each day your masterpiece. - John Wooden

  3. Back To Top    #3

    Join Date
    Jul 2011
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    Surf City, California
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    Re: Backwash and adding DE

    Pebble tech said wait one month before adding salt or using the heater.
    25-30K Gallon Inground Pool and Spa
    DE-Filter system 60 Sq. ft
    Salt Chlorine generator
    Pebble Bottom
    Variable Speed pump

  4. Back To Top    #4
    Melt In The Sun's Avatar
    Join Date
    Oct 2009
    Location
    Tucson, AZ
    Posts
    3,899

    Re: Backwash and adding DE

    Yes, and you said in your first post it's been less than a month. Is that a typo?
    11,200 gal, Pebble-Tec; Tristar 2-speed 1hp - Swimclear 325 ft2 cart - SWG - A & A in-floor cleaner - Heat pump. For the poolside cooking, a Yoder Wichita and a Big Steel Keg!
    TF Test Kits -- PoolMath -- Pool School
    Make each day your masterpiece. - John Wooden

  5. Back To Top    #5

    Join Date
    Jul 2011
    Location
    Surf City, California
    Posts
    24

    Re: Backwash and adding DE

    This week will be one month.
    25-30K Gallon Inground Pool and Spa
    DE-Filter system 60 Sq. ft
    Salt Chlorine generator
    Pebble Bottom
    Variable Speed pump

  6. Back To Top    #6

    Join Date
    Mar 2007
    Location
    Coastalish 'down easter'
    Posts
    4,160

    Re: Backwash and adding DE

    Welcome to TFP!!

    Please give this thread a read for using your DE filter

    Go ahead and add the salt, add 2/3 to 3/4 of what the chart says you'll need and add the remaining after you check the salt level - i.e. make sure that it raises the salt ~ what it should have - pool gallonage is estimated and you don't want to overdose nor underdose the salt. You can also use the change in salinity of the pool to get a better estimate of your pool's gallonage.

    HAPPY BIRTHDAY, MELT IN THE SUN!!!
    Luv& Luk
    -Ted

    Having done construction and service for 4 pool companies in 4 states starting in 1988, what I know about pools could fill a couple of books - what I don't know could fill a couple of libraries :-D

    POOL SCHOOL, TF Testkits, Jason's Pool Calculator, CYA vs. cl chart, (Just a few DARNED handy links!)

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