Swimming Pools in France

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   12/05/2008, 12:04
barneysfriends is not online. Last active: 07/10/2008 07:46:54 barneysfriends

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Skin Allergy caused by pool chemicals?
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has anyone had this? We opened our pool last week, as per instructions from the installer. First swim was yesterday and I have developed a hive like rash, similar to nettle sting. Wondered if it's the chlorine.....?
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   12/05/2008, 12:14
Baz is not online. Last active: 06/08/2008 08:44:16 Baz



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Re: Skin Allergy caused by pool chemicals?
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It may be useful to confirm your current Ph. Chlorine and Total Alkalinity water readings as this may be a clue.

Baz


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   12/05/2008, 18:52
Poolguy is not online. Last active: 26/05/2008 16:17:14 Poolguy



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Re: Skin Allergy caused by pool chemicals?
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I concur with Baz

 

More infomation please... test your water Free Chlorine, pH, Total Alkalinity, Cyanuric Acid.

Its extremly unlikely that your reaction was from chlorine...... do you have a history of hyper senitivity? ITs more likely to be pH out of balance.

Andrew


www.Poolguy.fr
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   13/05/2008, 23:10
Sharkster is not online. Last active: 29/11/2007 22:19:52 Sharkster

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Re: Skin Allergy caused by pool chemicals?
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Out of curiousity does high PH and total alkalinity dry out your skin?  I have just purchased a digital tester and got somewhat of a shock today when I tested the pool and all the levels are through the roof.  So far managed to reduce my PH to normal (I expect this to bounce back up due to high TA) and in the process of reducing TA - was over 200 now at 175, aiming for below 150 tomorrow..  Also with high PH and TA would the total chlorine level stay high, or have I been going a little wild with the chlorine tablets?

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   14/05/2008, 8:28
barneysfriends is not online. Last active: 07/10/2008 07:46:54 barneysfriends

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Re: Skin Allergy caused by pool chemicals?
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the PH levels are fine...well, the test kit says they are! The chlorine is a little high. I swam yesterday with only a little rash reaction, but I made sure to shower off after swimming. Wondered if the previous reaction was due to sitting in the sun with pool chemicals cooking on the skin! not very clever....
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   14/05/2008, 18:12
The P's is not online. Last active: 25/09/2008 07:52:58 The P's

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Re: Skin Allergy caused by pool chemicals?
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Chlorine gets a really bad press and is often the first port of call in blame.   Pool Guy and Baz are right in that you need to check everything.   It may be that you have a heat rash or the problem has been caused by something entirely unrelated to the pool.   Don't go crazy with chlorine though.   There are also companies out there that will test your water free for you, emailing the results to you and talking them through if you wish.

High alkalinity should not cause pH bounce though you are right, Sharkster, to keep it controlled.


John Plowright
mandmhottubs
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   14/05/2008, 22:12
Poolguy is not online. Last active: 26/05/2008 16:17:14 Poolguy



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Re: Skin Allergy caused by pool chemicals?
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Sharkster: Does high PH and total alkalinity dry out your skin?  I have just purchased a digital tester and got somewhat of a shock today when I tested the pool and all the levels are through the roof.  So far managed to reduce my PH to normal (I expect this to bounce back up due to high TA) and in the process of reducing TA - was over 200 now at 175, aiming for below 150 tomorrow..  Also with high PH and TA would the total chlorine level stay high, or have I been going a little wild with the chlorine tablets?

Sharkster

The main effect of a high pH is to make an 'itchy, dry irritable' feeling on your skin and to make your eyes sting (tears are about 7.2pH). So its really bad for swimming it also affects the ability of the chlorine to disinfect the water. For example: @7.2pH, 1.5ppm chlorine concentration will result in the life span of E.Cole of 0.5 of a second.

@ 7.6pH - you need nearly 2.5ppm Chlorine to get the same result

@ 7.8pH - you will need nearly 4ppm Chlorine  ditto

@ 8 pH - the chlorine is not really doing much at all

In addition to these problems, a High pH will begin to degrade all the pools fittings, make your liner expand causing wrinkles, corrode all metallic surfaces and electrical connections.

Its really important to keep your pH in check which is why a lot of people leave this job to an automatic controller, without it you need to be constantly vigilant.

Your TA reading of 200ppm is fine, no need to panic till you get up to 300ppm or down below 80ppm. pH bounce will only start to trouble you if you go down to very low TA in which case you need to dose with Bi carbonate to soda to bring it up again.

Hope that this has been of help.

Andrew


www.Poolguy.fr
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   14/05/2008, 22:48
Sharkster is not online. Last active: 29/11/2007 22:19:52 Sharkster

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Re: Skin Allergy caused by pool chemicals?
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That is a huge help.  My PH was 7.8 today, but have taken steps to bring it down to 7.2, which I guess in turn will reduce the TA a little anyway.  I think I have been a little lucky on the chlorine front then, since until yesterday my free chlorine was at around 10!! (I have been adding too much and the pool has been covered so no UV to burn any of it away).  It is truly scary how it is nearly impossible to judge what is going on in your pool with tester strips, I knew my chlorine and TA were a little high, but when I got my digital reader yesterday I was astounded how high they were in reality.

Thanks again.
Sharkster

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   15/05/2008, 7:57
Poolguy is not online. Last active: 26/05/2008 16:17:14 Poolguy



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Re: Skin Allergy caused by pool chemicals?
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Thats fine

 

Out of interest, which digital tester did you buy? Does it also test for cyanuric acid?

Andrew


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