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I’ve regularly been in both our hot tub and our pool at a FC level of 16 (SLAM level for CYA 40) and experienced no ill effects. In the pool your can’t even tell there is chlorine. The hot tub usually has some CC which you can smell but I’ve not experienced any side effects other than that. During the winter when we already get dry skin soaking in the hot water for a few hours does dry out your skin a bit, but for hours of soaking in hot water this is to be expected.

As for why I regularly do this if we have a hot tub or pool party I always take the FC to SLAM levels to ensure the FC stays in the pool/tub throughout the duration.

If just “dipping your hands in” is drying out your skin something else is happening. It’s not due to a high level of FC appropriately matched with a suitable level of CYA.
 
jseyfert3 said:
I’ve regularly been in both our hot tub and our pool at a FC level of 16 (SLAM level for CYA 40) and experienced no ill effects. In the pool your can’t even tell there is chlorine. The hot tub usually has some CC which you can smell but I’ve not experienced any side effects other than that. During the winter when we already get dry skin soaking in the hot water for a few hours does dry out your skin a bit, but for hours of soaking in hot water this is to be expected.

As for why I regularly do this if we have a hot tub or pool party I always take the FC to SLAM levels to ensure the FC stays in the pool/tub throughout the duration.

If just “dipping your hands in” is drying out your skin something else is happening. It’s not due to a high level of FC appropriately matched with a suitable level of CYA.
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I have sensitive skin to start with so I t thought I'd share my experience. High chlorine pool water is more drying than tap water to me.

I did further research and it looks like eye irritation is the main concern: https://www3.epa.gov/pesticides/chem_search/reg_actions/reregistration/fs_G-21_1-Sep-92.pdf
 
Back to "high" chlorine levels... the point, as explained in the chlorine/ cya link that Marty left, is that the absolute level of FC is not particularly meaningful without knowing the CYA level. You can safely and without irritation swim with FC levels well above 10 if your CYA is high enough. It is the active chlorine that matters.

FC of 3 with no CYA is harsher than FC of 12 with CYA of 50.
 
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Pauls234 said:
Back to "high" chlorine levels... the point, as explained in the chlorine/ cya link that Marty left, is that the absolute level of FC is not particularly meaningful without knowing the CYA level. You can safely and without irritation swim with FC levels well above 10 if your CYA is high enough. It is the active chlorine that matters.

FC of 3 with no CYA is harsher than FC of 12 with CYA of 50.
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For sanitization, yes. See the link I posted above, chlorinated isocyanurates are a strong eye irritant.
 

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I have had people swim in my pool at slam level with CYA at 80, my FC was at 31.. they did not even know I had chlorine in the pool.. if feels no different and one swore she was allergic to chlorine.. she was allergic to public pool chlorine as they do not have CYA and is WAY more harsh..

They spent 2 hours in the pool straight and had no ill affect.. I swam almost every day for the week I was slamming.. :)
 
proavia said:
So then you have no idea what the actual CYA measured then.
Pool stores get the CYA test wrong more times than not.
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They have a very accurate photometer, which now that I have my K2006 kit and I can see that I misread the scale, it matches. They now read 40 and the kit reads about 35-40 (hard to tell because Taylor's scale seems logarithmic).
 
Here is a nice table. All forms of asociated cyanurates tend to be acidic. It does not really matter much since the additions are usually
by dissolving so its a gradual lowering of the ph.
if you intend to rub your eyes with any for of associated cyanurates you will most likely result in a chemical burn.
The normal pH range for eye tear is 6.5 to 7.6; the mean value was 7.0.
Even though SWG pools like a PH of around 7.8-8, i try to keep mine around 7.4 for comfort.
Im lucky to have a high fill TA so adding acid is a no brainer.

www.ncbi.nlm.nih.gov

Chlorinated Cyanurates: Review of Water Chemistry and Associated Drinking Water Implications

Since 1958, cyanuric acid and two chlorinated cyanurates, commonly referred to as dichlor (anhydrous sodium dichloroisocyanurate or sodium dichloroisocyanurate dihydrate) or trichlor (trichloroisocyanuric acid), have been added to outdoor swimming pools ...
www.ncbi.nlm.nih.gov www.ncbi.nlm.nih.gov
Screen Shot 2021-07-17 at 10.53.59 p.m..png
 
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redmaxx said:
I am pretty sure dry and cracking skin is a known side effect of chlorine.
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Your skin condition is what is setting you up for cracking, not the chlorine. You can blame all chemicals in a pool, but that is not the underlying problem. Please consult with your Dermatologist.
 
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Flying Tivo said:
Here is a nice table. All forms of asociated cyanurates tend to be acidic. It does not really matter much since the additions are usually
by dissolving so its a gradual lowering of the ph.
if you intend to rub your eyes with any for of associated cyanurates you will most likely result in a chemical burn.
The normal pH range for eye tear is 6.5 to 7.6; the mean value was 7.0.
Even though SWG pools like a PH of around 7.8-8, i try to keep mine around 7.4 for comfort.
Im lucky to have a high fill TA so adding acid is a no brainer.

www.ncbi.nlm.nih.gov

Chlorinated Cyanurates: Review of Water Chemistry and Associated Drinking Water Implications

Since 1958, cyanuric acid and two chlorinated cyanurates, commonly referred to as dichlor (anhydrous sodium dichloroisocyanurate or sodium dichloroisocyanurate dihydrate) or trichlor (trichloroisocyanuric acid), have been added to outdoor swimming pools ...
www.ncbi.nlm.nih.gov www.ncbi.nlm.nih.gov
View attachment 356058
Click to expand...
If I understand you correctly then swim just don't get water in your eyes?
 
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