What is the purpose of pouring the chlorine so slowly in front of a jet(ago)?

Geminisq

Well-known member
May 23, 2021
140
LargoFL
Pool Size
7666
Surface
Vinyl
Chlorine
Liquid Chlorine
I have read several times in PS to pour the chlorine in a stream about the size of a pencil lead in front of a return jet. However I don't understand the purpose of pouring it in so slowly. I currently have a single speed pump/motor (soon to be replaced with a VS/ 2 speed motor). My pressure stays pretty steady at 10.
 

Geminisq

Well-known member
May 23, 2021
140
LargoFL
Pool Size
7666
Surface
Vinyl
Chlorine
Liquid Chlorine
To help it disperse. Chlorine is denser than water so it sinks to the bottom. If it sits there for too long it can bleach your liner.
Ok, got it. And will that cause a problem with accurate test results since it is not dispersing/mixing well with the water?
G,

I think they say a stream "about the size of a pencil", not the lead in the pencil.

The size is not all that important, you just need to make sure that whatever amount you are pouring in does not just sink to the bottom of the pool. It needs to mix well with the return water.

Thanks,

Jim R.
If poured too fast, can that also cause my chlorine levels to drop quickly? ie. overnight?
 

Jimrahbe

Mod Squad
TFP Expert
LifeTime Supporter
Jul 7, 2014
27,627
Bedford, TX
If poured too fast, can that also cause my chlorine levels to drop quickly? ie. overnight?
G,

Absolutely not!! How slow, or how fast, you pour it into your pool will have no effect on how fast it gets used up.

I suggest that you run an Overnight Chlorine Loss Test or OCLT. This link will tell you how... Overnight Chlorine Loss Test

At night, there should be nothing to consume your chlorine. If you test after sundown and then again before sunrise, there should be very little difference in the two readings. If you see a big drop in the chlorine level, that is a pretty good indication of your pool having algae.

Thanks,

Jim R.
 

woodyp

Mod Squad
TFP Expert
LifeTime Supporter
Apr 17, 2010
11,638
East Texas
You should wait at least 30 minutes to test after you add it...no matter the speed. But I question why it wasn't tested before? the chlorine addition was made. Speed nas no effect on over night loss.
 

jeffchap

Bronze Supporter
TFP Guide
Jun 26, 2012
2,386
Edmond OK
Pool Size
27500
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Ok, got it. And will that cause a problem with accurate test results since it is not dispersing/mixing well with the water?
No, with the pump running it should be well mixed within 15 - 30 minutes. So give it 30 minutes before testing and you should be fine.
 
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ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
38,940
Northern NJ
Pool Size
35000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
If you don't pour it in front of a return then stir the water in the area where you poured it in with your pool brush.

I pour chemicals into my deep end and stir them in.
 

SoFlo Tech

In The Industry
Feb 5, 2022
14
South Florida
I can 100% guarantee nobody in the pool service industry stirs their liquid chlorine into a pool.
I walk the perimeter of one side while pouring and then mix my muriatic acid in a 5 gallon bucket and pour down the other(if needed).
 

Mdragger88

Bronze Supporter
TFP Guide
Jun 1, 2018
6,960
Hernando, Ms
Pool Size
26000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
Intex Krystal Clear
I can 100% guarantee nobody in the pool service industry stirs their liquid chlorine into a pool.
I walk the perimeter of one side while pouring and then mix my muriatic acid in a 5 gallon bucket and pour down the other(if needed).
That doesn’t mean it’s safe for surfaces or a good practice. Many service techs do things every day that aren’t recommended here for variety of reasons.
 

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ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
38,940
Northern NJ
Pool Size
35000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
I can 100% guarantee nobody in the pool service industry stirs their liquid chlorine into a pool.
I walk the perimeter of one side while pouring and then mix my muriatic acid in a 5 gallon bucket and pour down the other(if needed).

Service Techs in the pool industry rarely follow best practices.

No one should blindly follow what there pool service does.
 
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