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

Thread: Newbie to SWG and need help on Chemical

  1. Back To Top    #1

    Newbie to SWG and need help on Chemical

    Hi all,

    I very very new to SWG's and unfamiliar with the chemicals. I have a 21 round pool. I check the SWG and it said the salt was 2600. I go to pool store (not the usual place, the place I use was on vacation) and they sell me:

    2 bags of salt
    Alkalinity Up 10 lbs.
    a small bag of PH increase (threw bag out so don't know how much)

    I do this, and I test again after 24 hours and now the PH is too high, salt is 3500, and free chlorine is testing "0". I now go back to my usual pool store and they give:

    Add 4 lbs of Calcium to skimmer
    add 3 lbs of PH decreaserto pool
    wait four hours
    add another 4 lbs of calcium to skimmer
    wait 2 hours
    add 1 lb of shock to skimmer
    filter continuous

    I did everything except the shock. I keep filter on with salt generator and after a few hours the salt generator Read "HIGH" and shut down.

    At this point I keep filter with SWG shut off, and I now have this:

    SWG reads 4500
    PH: 8.4
    Free Chlorine: O (not sure why this is 0 when salt is so high)
    Alkalinity: 80
    PPM Stabilizer 30-60 (I don't know what this is)

    I got the readings from test strips.

    What should I do? Should I empty some water and add fresh? Add more chemical? Shock pool.

    By the way the pool is crystal clear and not slimy.

  2. Back To Top    #2
    Mod Squad zea3's Avatar
    Join Date
    Jul 2009
    Location
    Houston, Texas
    Posts
    9,198

    Re: Newbie to SWG and need help on Chemical

    First use muriatic acid to drop the pH down to 7.5. The next thing you should do is buy a high quality test kit such as the Taylor k2006 or the TF 100. As you can see from your experience pool store testing is notoriously inconsistent and usually inaccurate. Test strips are also highly inaccurate and the range is too broad for accurately dosing the pool.

    If your salt is too high you will need to drain and replace some of the water. The pool calculator can help you determine how much water you need to drain.

    Please post a current set of test results and we can tell you if anything else needs adjusting.
    TFP Moderator
    Helpful links: TF Test Kits,TFP Pool School, PoolMath
    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
    Love TFP? Become a
    TFP Supporter!

  3. Back To Top    #3

    Join Date
    Jun 2011
    Location
    Long Beach, CA
    Posts
    2,669

    Re: Newbie to SWG and need help on Chemical

    Welcome to TFP frang!

    You need to read in Pool School and learn the basics of the chemistry. It is not too difficult and you will learn much more from reading this information than the pool stores ever will help you out. The Pool School button on the top right of each page will direct you to the information you need. Needless to say, you are being pool stored and spending time and money that lead to headaches.

    What you need to do is to add chlorine to the pool. Use liquid chlorine, either bleach or liquid from the pool store. They are the same thing but different concentrations. SWG's are not meant to bring the chlorine up from 0 to the proper level. They need they proper amount of chlorine in the water and then they maintain that level. See our recommended chlorine levels in this chart, pool-school/chlorine_cya_chart_shock.

    You also need to drop the pH into the 7's. The cheapest way to do this is use muriatic acid or continue using the dry acid. You can measure the pH after 30 minutes and add more muriatic acid if needed. Pour the acid over a return so it gets mixed in with the water to prevent it from pooling up.

    To avoid bad advice from the pool store you need your own test kit that gives accurate test results. Sorry, test strips are not what we recommend, see this link for the test kits we suggest, pool-school/pool_test_kit_comparison. Most of the members here use the TF-100 test kit as it has the most chemicals that are used most often.

    Another great aid is the Pool Calculator found here, http://www.poolcalculator.com/. Insert your pool size and your measured test results and what you want your targets to be and it will calculate how much of each chemical you need.

    You will need to drain some water to get the salt reading in the correct range. Use the pool calculator to estimate how much water to drain. It also has a calculator at the bottom of the page to figure out how many gallons your pool holds.

    Here are the recommended levels we suggest, pool-school/recommended_levels.
    16k gal plaster with raised spa, Jandy DEV60 filter, 2 HP 2-speed SHPF Jandy Stealth pump
    Hayward Aqua Rite T-15 SWCG, Jandy LXi 400k BTU NG heater, 350 sq.ft. of Sun Star solar panels, TF-100 Test Kit, Dolphin s300i Cleaner
    Test Kits . Pool Math . Chlorine/CYA Chart . The SLAM Process

  4. Back To Top    #4
    Patrick_B's Avatar
    Join Date
    Jun 2011
    Location
    Midland TX
    Posts
    15,001

    Re: Newbie to SWG and need help on Chemical

    I just want to say welcome to TFP. If you'll stay here and learn, you can get off that expensive pool store roller coaster ride.
    TFP Moderator
    Essential Links:
    ABC's Of Pool Chemistry, Test Kits, SLAM Your Pool
    28K Gal IG FreeForm, CLI Quartz, Pentair 36"SF & VS Pump, Dolphin M5, Rheem

  5. Back To Top    #5

    Join Date
    Aug 2010
    Location
    Dallas, TX
    Posts
    4,052

    Re: Newbie to SWG and need help on Chemical

    Welcome, and I'm glad you are here to avoid this type of thing. I "love" the fact that they sold you pH increaser and pH decreaser.

    FYI, you shouldn't put shock product into your skimmer.
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
    If TFP has helped you, please click to SUPPORT TFP!

  6. Back To Top    #6

    Re: Newbie to SWG and need help on Chemical

    Thank you all. I called the pool store and the don't have the type of test kit recommended. I will order it online. I will read here and ask questions. In the meantime I called the swg manufacture and he. Reset my swg and it reads 3400. I am hoping that is accurate. The test strip was higher hough. Also by adding chlorine the ph is now in range as is the other values. Right now power is out from a storm so nothing can be done.

    Thanks for the heads up about putting the chlorine in skimmer. I did do that anymore.

    How do you pout granular chlorine in pool.

  7. Back To Top    #7

    Join Date
    Jun 2011
    Location
    Long Beach, CA
    Posts
    2,669

    Re: Newbie to SWG and need help on Chemical

    Pre dissolve the granular chlorine in a bucket of water then pour it in the pool.
    16k gal plaster with raised spa, Jandy DEV60 filter, 2 HP 2-speed SHPF Jandy Stealth pump
    Hayward Aqua Rite T-15 SWCG, Jandy LXi 400k BTU NG heater, 350 sq.ft. of Sun Star solar panels, TF-100 Test Kit, Dolphin s300i Cleaner
    Test Kits . Pool Math . Chlorine/CYA Chart . The SLAM Process

Posting Permissions

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