Hi everybody! I took your advice and purchased the Intex 2,650-Gallon Sand Filter Pump . It should be here tomorrow. I'm sure the instructions will say what sand to buy, etc., but I would rather listen to your opinions as you have the tried and true experiences. I had a cartridge pump before, so I have no idea what to do with this one. What sand do I need to get and where is the best place? I understand this type of pump will be easier. I have no idea how to run this thing although I hear you all talk about backwashing, etc., but I'll just be glad to get rid of the cartridges. I live in an agricultural/desert area and at times the dust, etc. made me spray out that thing every other day...after a windy day, boy forget it, just change it! As always, thank you!