. . . membership upgraded.

Mark and Richard have covered the basics (and a little more) of UV units on pools for you. If you need more, I can find some of the very extensive discussions from the last 2 years, covering the specific topic of UV units AND also the topic if chemical sensitivity. But here are the key points:

1. UV units can have a legitimate application on INDOOR chlorinated pools.

2. We have seen no evidence (and we HAVE looked) that there is ANY legitimate reason to use UV on outdoor pools.

3. We have seen no evidence (and again, we have looked, for years) that either chlorine allergies OR chlorine sensitivity exist.

4. But there is MUCH evidence that sensitive or allergic responses to various chemicals that form in chlorinated pools that are (a) mis-managed or (b) indoors with heavy use. However these chemicals are not present in uncovered outdoor chlorinated pools.

5. Dermatologists currently treat many skin conditions, in both adult and pediatric patients, with "bleach baths" of 50+ ppm free chlorine. These levels are 10x typical pool levels.

6. When mass media journalists write about chlorine topics, they often make SERIOUS errors in describing the chemistry of the situations on which they are reporting. In other words, they spout BS because they don't know enough to tell the difference. But they do know that paranoia and fear sell ads. This is an extension of the old newspaper adage, "if it bleeds, it leads"! As a result, most everything most everybody 'knows' about chlorine is false.