Calcium Chloride - How Much Can I Add

PoolGate

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TFP Guide
Jun 7, 2017
5,954
Damascus, MD
Pool Size
29000
Surface
Plaster
Chlorine
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Jandy Aquapure 1400
Check pool math. Be careful with that if you are premixing it in a bucket it can actually burn your hand.
 

JFS61

Active member
Aug 16, 2015
29
Bryan, Texas
According to PoolMath, I need to add in 12 pounds (pool is 10,000 gallons).

I realize that my original question was worded rather vaguely, as my concern was in regards to there being a limit as to how many pounds of CH one can add to a pool in a given application.
 

mknauss

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May 3, 2014
39,876
Laughlin, NV
Pool Size
6000
Surface
Fiberglass
Chlorine
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Pentair Intellichlor IC-40
I would suggest doing it in stages. As PoolGate said, you can only dissolve 1 or 2 pounds in a 5 gallon bucket of water at a time or it will get dangerously hot. So maybe do 4 pounds a day, with a day in between. Be sure you are not adding any other chemical (except chlorine) when adding the calcium.

Odd that you need to add calcium to a pool in Texas. Most of the reports we see from Texas has hard water.
 

JFS61

Active member
Aug 16, 2015
29
Bryan, Texas
I would suggest doing it in stages. As PoolGate said, you can only dissolve 1 or 2 pounds in a 5 gallon bucket of water at a time or it will get dangerously hot. So maybe do 4 pounds a day, with a day in between. Be sure you are not adding any other chemical (except chlorine) when adding the calcium.

Odd that you need to add calcium to a pool in Texas. Most of the reports we see from Texas has hard water.

Our city water has less than four (4) ppm of calcium out of the tap, so anytime you backwash or vacuum to waste, out comes the bucket of calcium chloride (it also has a TA of 320, but that's a headache for another thread).
 
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YippeeSkippy

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LifeTime Supporter
Jan 17, 2012
16,719
Evans, Georgia
Our city water has less than four (4) ppm of calcium out of the tap, so anytime you backwash or vacuum to waste, out comes the bucket of calcium chloride (it also has a TA of 320, but that's a headache for another thread).
Are you sure about that low LOW CH reading? I thought *my* CH was about as low as city/county water got at 40ppm????

Maddie :flower:
 

JFS61

Active member
Aug 16, 2015
29
Bryan, Texas
Are you sure about that low LOW CH reading? I thought *my* CH was about as low as city/county water got at 40ppm????

Maddie :flower:
Yep, I never could get any reading whatsoever with my Taylor test kit, so decided to check with the City, and sure enough, their most recent annual water quality report showed a calcium level of 3.49 PPM.

To look at it on the bright side, at least we don't have to worry about kidney stones around here.
 
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