Split off of this topic. JasonLion
I agree that for most of people a SWG is the best option. I did consider this as well in the beginning, but I had to give it up for to reasons. First, all the backwash an main drain water ends up in by backyard, and with the holt local climate and lack of rain in summer the salt is likely to make problems for a red poor soil. The second reason is the time interval for swimming pool maintenance. I think one can leave the SWG system unattended for weeks rather than months at a time. I cannot risk coming to the property and finding a green swimming pool. That is likely to ruin our holiday. Still I recommend the UV lamp for all the pools as a backup system. It is not sufficient for sanitizing purposes, but it will keep algae out of the pool. As long as the pump and the UV lamp works, water is free of algae and copper algaicide takes care of the some algae cliging to some surfaces as all pools have some areas with poor circullation.