SW Las Vegas, Nevada 10,294 Gal pool, 660 Gal attached spa - 10,949 Gal total. Plaster. 550 Series Hayward Cartridge filter w/ 550SqFt surface area. Flow rate 150GPH, 2.5 Hp single speed pump. Built 2005 with attached spa that sits higher than pool but is on same filtration system.
I use TFTestkits , Pool Calculator , Pool School - Easy Peasy to do - and am VERY happy with my pool!