I bought a 27' 27000gal above ground pool last year that came with a pool frog chlorinator. I'm not sure if it would be cheaper to buy the 3" trichlor pucks and a floater rather than using the pool frog which also uses trichlor I believe. I dont think I will buy the mineral pack for the pool frog which costs about $90.00-seems like a waste of money?. ANY advice would be appreciated.