I have a 2 hp, 2 speed pump on a 24'x54" AG pool. I know, I don't need 2 hp, but I didn't find this great site until after the fact! We've had the pool for a couple of weeks and have been running the pump on low 24x7. We just got a timer yesterday, and know I should run the pump early morning and at night. What speed should I use, and what times do you run your pump?