Thanks for the response Big Dave.

I got interested in the UV process because we use one at our cottage to prep lake-drawn drinking water after a sand/rust and then an activated charcoal filter. The water becomes potable after the process (had it tested), so I was interested in thoughts on its use in a pool. It seems to limit the need for chlorine from what I have seen so far.

Salt water is on my radar too, although my understanding of the process is limited and it seems to be a bit of a misnomer, as what it seems to do is create chlorine.

I am definitely going to implement a BBB system for the time being as the price tag on SWCG and UV is too high for me right now (and heck, the price of bleach is RIGHT!)