I did something dumb rather than go with the info given me by the installer: I took my 25 ft tape and measured my pool. 25 X13X4.5X7.5= ? I get 10,125 gal.
MY question is: Do I get a 25K system from Salt Solutions or a 40K system from them. Either is within my budget ...but 60 bucks is 60 bucks...