Chlorine Generator causing cloudy pool

Causes and cures for cloudy swimming pool water.
Milky pool water, white, pink, brown, purple, black cloudy water.
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My Pool: 32000 Litre, pebble crete pool.
Austral CTX280 pump
H2Flo (Austal) 25 inch filter with glass media
Zodiac small cell Tri-flo chlorinator.

Re: Chlorine Generator causing cloudy pool

Postby cachis » Tue 17 Dec, 2019 19:18

Hi Mark

This is good information re the air leak. Since my last post I have replaced the o-rings on the unions to the pump and plastic basket cover. I no longer have small bubbles in the pool which is great. But I do still however have cloudyness. So now its gone from 100000's of small bubbles and cloud to just cloudyness.

I did also notice that the chlorinator cycles (on and off). its set to 30% so perhaps that how it works. Like a timer. On for 10mins then off then on again. So the pool when the chlorionator is engaged by the system is cloudy then when off is perfect and then on again is cloudy.

I will look to see if I have totally resolved the air issue as this could still be contributing to the cloudyness perhaps.


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My Pool: Salt fiberglass inground pool

Re: Chlorine Generator causing cloudy pool

Postby bestSummers » Tue 26 May, 2020 12:56

I also had cloudy water when my salt generate was on. Found my problem was a small amount air getting in my return line . Fix the leak problem solved.
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My Pool: 29,000 gal, in-ground, vinyl lined, sand filter, SWCG

Re: Chlorine Generator causing cloudy pool

Postby mgzych » Thu 28 May, 2020 11:16

@bestSummers, glad you found success! Nice to hear that at least one apparent cause of this issue has been validated. Hope others will benefit from this thread in the future. Enjoy the pool season!

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Re: Chlorine Generator causing cloudy pool

Postby Aussie1 » Fri 19 Jun, 2020 17:27

Hi Everyone, cloudy pool from chlorine production is normally because of fat or oil buildup in your filter, as water passes through the filter it can become saturated with these fats, when passing across the salt cell these fats are broken down to an oily film which then wrap around the chlorine gas making millions of micro bubbles that all go back to your pool and make it cloudy, these micro bubbles then disappear after a few minutes as the chlorine gas breaks through the oily film

Fix is to either degrease the filter media or change the filter media

Fixed heaps of this problem in Australia and is always the problem, filter media should be changed every 5yrs for commercial and 10 yrs for domestic pools or as I said above you need to degrease the filter....pool shops have the product for this

Fats and oils are from Body fats and tanning lotions

Easy test to check this is the problem is to operate the filter in Recirc or Bypass with the chlorinator operating and you should see the problem disappear


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