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Thread: Is Arm and Hammer Super Washing Soda the same as baking soda

  1. #1
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    Is Arm and Hammer Super Washing Soda the same as baking soda

    Is Arm and Hammer Super Washing Soda the same as baking soda? Is it OK for the pool?
    36 x 18 oval pool, inground, plaster pool.
    27000 gallons
    1 hp pump. Sand filter
    Pool built in 1971.

  2. #2
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    Re: Is Arm and Hammer Super Washing Soda the same as baking

    no washing soda is Sodium Carbonate(Na2CO3), Baking Soda is Sodium Bicarbonate(CHNaO3).

  3. #3
    Mod Squad Bama Rambler's Avatar
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    Re: Is Arm and Hammer Super Washing Soda the same as baking

    Washing soda is not the same as baking soda. It is ok for the pool, depending on what needs adjusting. It affects the pH and TA whereas baking soda mostly affects TA.

    You can use the Pool Calc to see what effect adding it will have. There's a section near the bottom on effects of adding chems.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 1.5hp Dynamo pump. 24" Pentair Sand Dollar Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit
    You can stop SLAMing your pool when you pass the OCLT (You lose 1ppm or less FC overnight, & You have .5ppm CC's or less) & your water is clear.

  4. #4
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    Re: Is Arm and Hammer Super Washing Soda the same as baking

    If I read right Washing soda is for raising the Ph and baking Soda for raising TA.
    See this link:http://www.troublefreepool.com/pool-...pool_chemicals

    Edit: Bama and bones got you
    18' x 42" Intex (4786 Gal @ 80% capacity) Intex 8110 SWCG, 2000 GPH cartridge filter.
    Full Sun, Well Water, Borates at approx. 50
    TFTestKit-100--The Pool Calculator--Pool School

  5. #5
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    Re: Is Arm and Hammer Super Washing Soda the same as baking

    No, not the same!
    Washing soda is sodium carbonate. You use it raise the pH. It will also raise the TA as well.

    Baking soda is sodium bicarbonate. It will raise the pH a little on its own, but mainly used to raise the TA.
    The general rule of thumb is to raise the TA with baking soda, and raise the pH with 20 mule team borax (borax rasies the pH, but does little to the TA.
    If you need to do both, you can use washing soda. That being said, you can use the pool calculator to see what effect adding either borax, baking soda or washing soda has on the pH and TA. Generally, you need to add less washing soda to effect a change in pH, but it will alter the TA. FWIW, washing soda or sodium carbonate is the same thing as "pH Up" sold at a pool store.

    EDIT: holy mac, 3 of us at the same time!
    14,000 gallon IG, Vinyl. Hayward 3/4 hp superpump, Penatair IC40 SWCG, Pentair automation, Hayward sand filter, Aqua Comfort heat pump, Hayward 400k Lo-Nox LP heater.

  6. #6
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    Re: Is Arm and Hammer Super Washing Soda the same as baking

    Thank you all.
    36 x 18 oval pool, inground, plaster pool.
    27000 gallons
    1 hp pump. Sand filter
    Pool built in 1971.

  7. #7
    Mod Squad linen's Avatar
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    Re: Is Arm and Hammer Super Washing Soda the same as baking

    As I mentioned in your other thread...I would use the washing soda (a.k.a. soda ash) to raise both your pH and TA since your CSI is so negative.
    TFP Moderator who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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