hydor evolution or magnum?
 

hey guys i have a 150g reef tank with about 80 pounds of live rock and i have some cheap power head that suppose to be doing 3000gph i got it for 50bucks its some china made crap. i want to upgrade my power head and i wanted to ask what would be better to add two Hydor Koralia Evolution 1500GPH or one Koralia Magnum 8 - 3250GPH or if i even should go with 4 Hydor Koralia Evolution 600GPH? i wanted to see what everone thought and input, and thank you in advance for the suggestion

I would go with two or three 1500's; they will give you better controll of your flow so you can adjust the flow to hit the hard to get at areas.

would u recommend running both at the same time or one on and one off?