New member with a 3 year old 18x33 (52") AGP that is buried approx 32" down. Been using using BBB since last summer and very satisfied. I currently have a clean and clear cartridge filter system with 1 1/2 hp pump which died 2 days ago. My local independent pool advisor recommends switching from cartridge to sand. From reading the forums and posts on sand v cartridge, it seems to be a personal choice with all options having pros/cons. I am leaning toward the sand. After searching the internet and locally, I found a great price at a local pool store on a complete system (waterway clearwater sand system) but I believe the 26" 2 hp, 2-speed sand filter system they recommended seems a little overkill for my pool. Thanks for your guidance.