Hi folks. Getting a 21'x52" doughboy above ground installed Thursday. Everytime I research maintenance I come across this site so I decided to register. As Im sure I will have a question at some point. I have owned a 15"x42" intex with a salt system in the past and this is a new pool with chlorine I am getting installed. I was told DoughBoy voids the warranty when a SWG is applied?