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Author Topic: Baking Soda  (Read 3541 times)

powerplay

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Baking Soda
« on: February 18, 2006, 03:57:15 pm »
Hi,
On an initial water fill my ph is 6.8 and alkalinity is 80. I use dichlor. I want to use baking soda to raise both to acceptable levels. What is an approximate formula/ rule of thumb of a quantity to add. The tub is 520 gallons. How long will it take before I can recheck the readings.
Thank you

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Baking Soda
« on: February 18, 2006, 03:57:15 pm »

Vinny

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Re: Baking Soda
« Reply #1 on: February 18, 2006, 04:22:28 pm »
Put 6 tablespoons in and give it a 1/2 hour to mix. Adjust more or less as needed. The PH may go up a lot (probably not but be on the safe side). I don't think there's a formula.

Once you get used to the amounts your tub/water needs, you'll add the right amount from the start.

wmccall

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Re: Baking Soda
« Reply #2 on: February 18, 2006, 04:46:29 pm »
I disagree on the 1/2 hour.   Anytime I make a PH adjustment, I wait 24 hours to check again.   That avoids having a runaway condition when you add more chemicals because your reading hasn't caught up with the last chemicals you had added.  
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Chas

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Re: Baking Soda
« Reply #3 on: February 18, 2006, 08:27:23 pm »
I'm going to go with Bill on this one: wait at least four or five hours, and 24 is certainly the best. pH and TA will tend to take a jump and then settle a bit.

Bill - your avatar is missing a word I think.
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Vinny

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Re: Baking Soda
« Reply #4 on: February 18, 2006, 09:32:09 pm »
I guess it's time to change the way I'm doing things!

Brewman

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Re: Baking Soda
« Reply #5 on: February 19, 2006, 01:43:28 am »
It's also time for Bill to add the missing word to his avatar.  IF he's not too busy buying drinks for his curling buddies! ;)
Brewman

Tman122

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Re: Baking Soda
« Reply #6 on: February 19, 2006, 05:40:49 am »
My water starts with almost the same readings as yours 6.8-7.0 PH and 60-70 TA I use 4-6 OZ's of baking soda in 3 additions over a week to get my water where it needs to be. Then it takes about 1-2 OZ's every 5-6 weeks to maintain it.
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Hot Tub Forum

Re: Baking Soda
« Reply #6 on: February 19, 2006, 05:40:49 am »

 

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