Ph and alkalinity low, salt system

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Ph and alkalinity low, salt system

Postby Deb121 » Wed 27 Jun, 2007 17:45

We have an above ground pool hooked to a salt generator. The PH and alkalinity are both low. Can we add baking soda or borax to bring it up instead of the PH increaser?

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Postby chem geek » Wed 27 Jun, 2007 18:07

Yes you can. Technically, adding pH Up (sodium carbonate / washing soda) is identical to adding Alkalinity Up (sodium bicarbonate / baking soda) plus Lye (sodium hydroxide / caustic soda) and the lye is similar to Borax. So after you figure out how much of each you would need, you can see which would be cheaper. Usually in this situation I just use pH Up, but that's just for convenience. By the way, Arm & Hammer Super Washing Soda (that says in the ingredients it's Sodium Carbonate and is NOT the laundry detergent) is the same as pH Up.

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