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Thread: Brand new

  1. Back To Top    #1

    Brand new

    Starting up a 18' x 48" Intex. Going to use a sand filter. Going to start adding dichlor as I fill. Pretested well water and pH is 6.8. What else should I add as I am filling? Thanks!
    Third time's a charm!
    5455 gal., 18' X 48" Intex pop-up
    Intex Krystal Clear Sand Filter Pump, 1050 gal/hour

  2. Back To Top    #2

    Join Date
    Feb 2008
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    Denton, TX
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    Re: Brand new

    Welcome to TFP!

    Aeration will probably get your pH up. Dichlor is good to use, at least initially as it raises CYA quickly. Just be careful not to overshoot the CYA. Have you had your water tested for metals?

  3. Back To Top    #3

    Re: Brand new

    No, : ( do I need to?
    Third time's a charm!
    5455 gal., 18' X 48" Intex pop-up
    Intex Krystal Clear Sand Filter Pump, 1050 gal/hour

  4. Back To Top    #4

    Re: Brand new

    OK, this is probably a stupid question, but be "aerate", to you mean run the filter pump?
    Third time's a charm!
    5455 gal., 18' X 48" Intex pop-up
    Intex Krystal Clear Sand Filter Pump, 1050 gal/hour

  5. Back To Top    #5
    JasonLion's Avatar
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    37,879

    Re: Brand new

    Aeration can be done several ways, but all of the best ones create bubbles in the water one way or another. A fountain, waterfall, return pointed up so it breaks the surface, kids splashing, and so on.

    Don't leave the PH low for very long, especially if you are using dichlor (which is very acidic). I would use some soda ash or PH Up to get the PH up some right away.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  6. Back To Top    #6

    Re: Brand new

    Can I use baking soda to raise the pH? I have some on hand.
    Third time's a charm!
    5455 gal., 18' X 48" Intex pop-up
    Intex Krystal Clear Sand Filter Pump, 1050 gal/hour

  7. Back To Top    #7
    Mod Squad zea3's Avatar
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    Re: Brand new

    Baking soda will raise TA, not pH. You can use borax, (available in stores as 20 Mule Team Borax), or soda ash, (available in stores as Arm and Hammer Super Laundry Booster {not laundry detergent}).
    TFP Moderator
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  8. Back To Top    #8

    Re: Brand new

    Ok, thanks!!
    Third time's a charm!
    5455 gal., 18' X 48" Intex pop-up
    Intex Krystal Clear Sand Filter Pump, 1050 gal/hour

  9. Back To Top    #9

    Re: Brand new

    After 4 nights of adding 4-5 oz of dichlor, and one night of adding 62 oz of borax, here are my test results:

    FC (FAS/DPD) = 6
    pH = 7.0
    CYA = 0!

    I am reasonably intelligent, so I'm pretty sure I am following the directions correctly on the test kit (TF-100)
    So why is my CYA still 0 and why hasn't my pH risen any more than it has?

    And are these levels ok for swimming?
    Third time's a charm!
    5455 gal., 18' X 48" Intex pop-up
    Intex Krystal Clear Sand Filter Pump, 1050 gal/hour

  10. Back To Top    #10

    In the Industry

    duraleigh's Avatar
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    Apr 2007
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    Re: Brand new

    It takes about a week for CYA to register but you can assume it's in there even though it doesn't show up on the test. What dosage of dichlor did you put in and what SHOULD be your resultant CYA level?

    EDIT: I see your post now that you added about 16 oz od dichlor which raises your CYA a measly 10-12ppm....nowhere near enough and one of many reasons why I never encorage the use of dichlor to raise CYA.

    Go to HD, Lowe's, Pool Store and get enough CYA to get to 40ppm (30 more) and put it in your pool. It show on the test but, again, you can assume it's in there in 24 hours.

    Go swimming!
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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