You are right! it is too good to be true. Outdoor pools get lots of UV light (far more than a unit is likely to produce) from the sun. It's just a waste of money on an outdoor pool.

Respiratory and chemical sensitivity issues are more likely caused by under chlorination than adequate (or excessive) chlorination. When chlorine oxidizes organic material (stuff that falls into the pool and stuff that swimmers bring in), many intermediate products are created. Many of these intermediate products are known to cause problems. Some are lightweight and blow away on the breeze (outdoor pool). Some are further oxidized in the presence of adequate chlorine (and UV - outdoor pool). Without sufficient chlorine, the intermediate products stick around causing issues for those who are sensitive.

Products that claim health benefits from reduced chlorine are really just making the problem worse.

Please read all you can at poolsolutions.com and the stickies in the forums here. Pay attention to the relationship between CYA and chlorine. If you learn and follow the pool care method taught here, you'll spend less time and money on your pool, enjoy it more, and breathe easy.

Welcome, glad you found us.