A world of water pumps.

Well, I am currently building a 12 bucket aeroponic system. It's a pretty basic setup. Each bucket has 1/2" PVC ran through with misters. The buckets will all drain together and will be routed back to the reservoir. I've seen the water pumps most people use for cloning buckets etc. But I need more pressure! :weedpoke: I'm running as far as 15 feet. Ive been looking for sooo long today for a good pump. And some information that I just cannot find anywhere. I have no experience with water pumps. And there are just soooo many different types that have different uses and effects. I've got a good idea on some that are 55-60 psi. But they are for RV's And I don't know if that kind of pump can run without a hose "pumping" into it. Rather where I need one that can basically use suction/gravity to draw water in. There are 12 buckets (split in to 2 rows of 6), and want to use 1 high quality mister per bucket. Can anybody help me out here? What kind of pressure would you recommend for a system like this? Thanks for any help.

I was looking at this one.

Wel-Bilt Cast Iron Clear Water Pump â?? 720 GPH, 1/2 HP, 1in. | Utility Pumps | Northern Tool + Equipment