Hot Tub For Sensitive Skin---Help

[baltymoron]

I have a 375 gallon portable spa with an ozonator. The spa is about 3 years old and I have always used chlorine for shock about once a month combined with nature2, a built in ozonator, and MPS after each use and water changes every 4-6 months. The water is beautiful, pleasant, and clear. My problem is that my daughters and I get terrible eczema/rashes after using the spa. We always are sure to shower immediately after getting out and even apply a moisturizing cream like Eucerin after using the spa, but we still get itchy rashes after using the spa. After a long bath, no such rash occurs. I am a physician, and to all those who may suggest pseudomonas or something, this is not an infection, rather this is a hypersensitivity reaction of some sort like eczema, but is entirely associated with spa use. Also, I can promise that no one is urinating or defecating in the spa. My question is what people suggest to change up my routine? Should I put in less or less frequent MPS- probably do about 4 tablespoons after a use and we use the spa once a week? Switch to Bromine? Use only Chlorine for maintenance? Get rid of Nature2? Use some other chemicals? We love going in the spa, but the rashes after make it unpleasant. Thank you!

[Dnepr Dave]

http://www.poolspaforum.com/forum/index.php?s=47a4afbf30b2225b5707ad25d8910b78&showtopic=45423

[chem geek]

Be sure to let us know if the rash stops after stopping use of MPS non-chlorine shock. In your situation with silver ions from Nature², the irritating minor component in MPS products should be broken down so if you still get rashes then that would implicate the MPS itself and that would be good to know.