Flow concerns

[kutcha]

Hello all so I have a bit of a concern for my 94 gallon cubes flow. I currently have two Nero 5's staggered on the back wall (one high one low) for flow ( it is a lps, nem, softy tank) I worry that the flow is being restricted by the overflow walls. I don't really want to put the pumps on the side walls but if there is no other choice I will. Any advice of information would be greatly appreciated. I have attached a few shots of the tank empty (resetting up after just moving). Thank you for your time helping me with this issue.

 

[blaxsun]

Both should be fine on the back wall on either sides of the overflow. I would probably place them higher up and angle one slightly down and the other slightly up (just so the rocks don't impeded flow).