re: Where do you order your pool chlorine from?

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I'm a Analyzer Specialist by trade.

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so an Anal-ist?

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chemistry is easy for me

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muriatic acid to drop the ph and bacon soda

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The Poop Math app is like $7 a year but has been great to tell me what chemical And qty to add

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It’s used to raise alkalinity without raising pH much.

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when my pH is out of whack i always check alkalinity and its always too low. once i get the alkalinity in check with 'bacon' soda, the pH seems to take care of itself.

Costco

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when my pH is out of whack i always check alkalinity and its always too low.

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If your alkalinity is too low, you will have swings in pH. Adding baking soda (sodium bicarbonate) will increase your alakalinity and stabilize the pH, but it isn’t going to substantially increase your pH. Sodium carbonate on the other hand is used to increase pH.

With a SWG it is rare to have too low of pH. Usually pH is high and alkalinity is low so you have to add muriatic acid to drop it, then use baking soda to increase alkalinity without raising the pH back up.

Vitamin C Costco cheapest
Muriatic acid home depot or true valve cheapest
Salt Costco
Baking Soda Costo

Yes basically. I have had my pool for years and I never go to a pool store for chemicals. Every once in awhile just for shits a giggles. I bring my water in, to get checked. but the kids that do the test are very sloppy when they test. And I doubt they know anything about colorimetry testing. It's just funny to me. Two people can do the same exact test and come up with totally different results. Try it. bring your water to two different pool stores and check both results. you will laugh.