Rash after hot tub (new pool with hot tub)

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What @ajw22 said. Just wondering how the SWCG was plumbed as maybe you're getting all produced chlorine into the hot tub while in spa mode which can be alot.
Your signature is important, see mine below with the link to help you get started.
 
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Talshum said:
Thank you will check the CYA. Using TF salt pro. Could you elaborate about the plumbing question?
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If the SWG cell is before the diverter valve that sends water to the pool and spa, when the spa is in use the SWG may be producing a lot more chlorine than is needed. If the SWG is controlled by automation, many systems allow a different (lesser) amount to be produced for the spa when in use. What is the pH of the water?
 
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1poolman1 said:
If the SWG cell is before the diverter valve that sends water to the pool and spa, when the spa is in use the SWG may be producing a lot more chlorine than is needed. If the SWG is controlled by automation, many systems allow a different (lesser) amount to be produced for the spa when in use. What is the pH of the water?
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@Talshum ^That is a really good point. Try testing the pool and spa with separate sampling from each.

I feel their pain because I‘ve just started getting a reaction from a holiday rental hot tub. But have never had problems from our pool at TFP levels. The hot tub is warmer and being in the mountains with low humidity, dry skin could be a factor. But trust me here, I have been doing my best to rehydrate after skiing… Just maybe that may be a factor too. If the hot tub is not high in FC being low in FC can cause a build up of chloramines that give that classic chlorine smell and is what most people are reactive too.
 
1poolman1 said:
If the SWG cell is before the diverter valve that sends water to the pool and spa, when the spa is in use the SWG may be producing a lot more chlorine than is needed. If the SWG is controlled by automation, many systems allow a different (lesser) amount to be produced for the spa when in use. What is the pH of the water?
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The ph was very very high. Like purple. (How do you check an accurate number when it’s off the charts?) last week the pool guy added acid to reduce it.
I know 2 weeks ago the pool guy noticed that the setting was to 100% chlorine. He changed to 10% maybe it take time?

The chlorine drop test was 30 drops before becoming clear
 
You need to turn the swg off as it pertains to the spa for now so the fc can come down.
Do the cya test in the spa & tell us what you get.
The ph test is invalid at fc levels above 10ppm.
Wait until the fc falls below 10ppm to test & adjust ph.
You may be able to simply mix the spa with the pool to dilute the fc level in the spa.
Show us your equipment including any valves.
 
Talshum said:
The ph was very very high. Like purple. (How do you check an accurate number when it’s off the charts?) last week the pool guy added acid to reduce it.
I know 2 weeks ago the pool guy noticed that the setting was to 100% chlorine. He changed to 10% maybe it take time?

The chlorine drop test was 30 drops before becoming clear
Click to expand...

Maybe it’s time time to get a decent Test Kits Compared and do your own pool care.
 
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Talshum said:
Chlorine drop test 27 drops so 13.5?
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Depends. 10ml sample ? Then yes.
Talshum said:
Cya 45
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Always round up to the next 10. I find it makes it exponentially easier to only add to the 10 lines seeing how you're rounding up. It's WAY easier to see its not a 20 and not a 40. Then I feel much better about the sketchy 30.
Talshum said:
Ph 8.2
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You may need to add / mix/ retest several times as anything high looks like 8.2. If you wait until tomorrow to retest, you can't prove you reached a 7 today.


Sorry I don't have rash ideas. Hang tight.
 
The fc is a little high but shouldn’t be causing a rash (unless of course it was quite higher while the spa was in use).
I suspect the higher ph might be a little bothersome but as mentioned the ph result is skewed at fc levels above 10ppm.
Did you test for cc’s ?
Have you used mps/non chlorine shock?
 
Mdragger88 said:
The fc is a little high but shouldn’t be causing a rash (unless of course it was quite higher while the spa was in use).
I suspect the higher ph might be a little bothersome but as mentioned the ph result is skewed at fc levels above 10ppm.
Did you test for cc’s ?
Have you used mps/non chlorine shock?
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I haven’t shocked it yet. Neither the pool guy. It’s not really a ranch it looks like a bite here is a pic.
 

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Talshum said:
That’s the leftovers. But yea 6 kids multiple dots. But not like full blown rash. More like bites kind of rash
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I have a feeling that the fc was just quite high when they were using the spa along with the ph.
The hotter water can already be a contributor to itchy skin so having all 3 things going on is like a recipe for it.
In a manually dosed spa having a higher fc level upon entering the tub is somewhat quickly remedied by a large bather load but yours was being maintained at that higher level continuously by your swcg.
Get the fc below 10ppm and adjust the ph to the 7’s. Then set the swcg to maintain target fc levels for your cya
FC/CYA Levels & see how you fare.
 
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Mdragger88 said:
I have a feeling that the fc was just quite high when they were using the spa along with the ph.
The hotter water can already be a contributor to itchy skin so having all 3 things going on is like a recipe for it.
In a manually dosed spa having a higher fc level upon entering the tub is somewhat quickly remedied by a large bather load but yours was being maintained at that higher level continuously by your swcg.
Get the fc below 10ppm and adjust the ph to the 7’s. Then set the swcg to maintain target fc levels for your cya
FC/CYA Levels & see how you fare.
Click to expand...
Thank you !! I can’t reduce FC without fresh water right?
 

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