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Thread: Newbie Here: Sand Filter Question

  1. Back To Top    #1

    Join Date
    May 2017
    Campbell, CA

    Smile Newbie Here: Sand Filter Question

    We just put up our new Intex 18' x 52" above ground pool. It comes with the Krystal Klear Sand Filter 1500 GPH. The setup DVD had no mention of adding chlorine to the pool. Do we need to use chlorine in our pool in addition to the sand filter? I would think so? If so, do we just use the chlorine tablets? Where do they go?

    Thank You

    Link to the pool we have:

  2. Back To Top    #2
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    DFW, TX

    Re: Newbie Here: Sand Filter Question

    Welcome to TFP and congrats on the new pool!

    Yes, you need to use chlorine in your pool. For now, you can put trichlor pucks in a floater to keep your chlorine up. But, soon you will need to switch over to bleach or liquid chlorine so that your CYA doesn't get too high.

    Do a little reading here, ABCs of Pool Water Chemistry And here, Pool School - Getting Started
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  3. Back To Top    #3
    Mod Squad Texas Splash's Avatar
    Join Date
    Jun 2014
    South-Central Texas, Marion/San Antonio

    Re: Newbie Here: Sand Filter Question

    Hello and welcome to TFP! Along with pooldv's comments & links:
    - Free Chlorine (FC) which is basically regular bleach. Day 1 level of about 3 ppm, then increase as needed after according to the Chlorine/CYA Chart (link below).
    - Stabilizer (CYA) for a minimum target of "30" which does 2 things: Protects you and the pool from the harshness of chlorine and protects the FC from the sun's UV rays.

    You can get both at Wal-Mart. Great Value bleach in the laundry section, and stabilizer (about $16) in the pool section. Place the stabilizer in a sock and let is sock in the water - squeeze often.

    More than likely your pH may need adjusting. Wal-Mart usually has a simple 5 or 6-way test kit that will help temporarily for testing. PH needs to be in the mid-7s.

    Use and save the vital links below in my signature. The Poolmath calculator will help you with dosage amounts. If you don't already have a TF-100 test kit (link below), you really need one. It will last all year and perhaps longer and give you pinpoint testing accuracy. Stay out of the pool stores! As noted above, only use tabs for a short period, and no bags of shock, no miracle bottle cures, just regular bleach. Once you get the right test kit, post a full set of numbers and we'll give you more advise.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
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