I am looking at putting in a cpsc16 in my new fiberglass 17k gallon pool. (one brochure on their site says it is enough and another says i need the next step up) I have a 2 speed motor with a sand filter (300 lbs/24 inch) I plan to run the pump constantly at low speed and only put on high for cleanings. I have always done chlorine in my other pools but wife wants swg. anything I need to watch out for on this? seems most folks get at least 2 years from the cells so while i doubt i will save much over chlorine seems it will at least be the same. appreciate any input out there. main reason for the compupool is the price. really dont want to spend 1k plus on an swg especially if i am not happy with it and decide to go back to chlorine tabs again.