Some perspective on to much power. I had a pump that could do 2000 GPH after head lose and piping into my 220. However I did use UGJ system to distribute the flow evenly across the tank. the pump was rated @ 3000gph @ 10ft I had it @ 5ft with fittings so I figure it was closer to 2000 at the tank.
If you are looking to save money, and buy a great pump that does a lot of water movement plus high efficiency look into alpine pumps. I have the 3000 gph model and it is more efficient, and just as quiet as smaller quiet one pumps. Plus they have 3 year warranties. And they are a lot cheaper if you know where to look. If you want to know more, PM me for details.