Hello reefers, waiting for my new Red Sea Max E-170 to come in and it's my first reef tank. I have 2 Koralia Third Generation Powerheads (1350 GPH) ordered but not sure if it's the right size or if I even need them starting out. I would love to get some MP10's but after shelling out 3k so far I don't think I can justify an extra $300-600 more for some powerheads. Keep the koralias? Return them or any better alternatives that aren't as expensive as the MP10?