Enough Water Flow?

[eb0]

I have a RedSea Wavemaker and a Fluval 404 (rated 340gph) and 2 aqua clear powerhead (rated 270 gph) they are all at the top of my tank. is this enough water flow or should I add more powerheads at the bottom of the tank also?

[Bertsch]

What is the size of you tank?
I have a flowva 304, 2 rio 600 powerheads, and a prizim skimmer in my 54 corner. That appears to be enough flow through the tank on that set up.
In my other tank (45 tall) I have a flova 20, 2 rio 600's, and a prizim skimmer and there is plenty of flow in that tank as well.