Increasing flow in a deep 90 Gallon

[Phillberto]

I already have a Tunze Stream 6000. I don't have any corals yet but plan to have mainly softies and LPS.
What would you advise on adding to increase flow? I was thinking another 6000 (adding a controller later) but was thinking a 7300/2 might work better - how do they compare?
Tank Dimensions (HxWxD)
40x22x24

 

[rvitko]

The 7300/2 moves a 5ft by 12" column of water, it can give a good ring current if bounced of a far wall at an angle. The 6000 gives a 4ft by 2ft water movement.