Pumps for 120g tank

[raidendex]

So I currently have two 6105 powerheads with soon wide flow adapters. I have also ordered 7096 controller to replace the 7092 (a bit too simple and I would like to have few more options).

Both 6105s placed on the same side of the tank blowing across the length of the tank (4'). Not sure yet what I will do with programming on 7096.

The question I have do you think I would get good enough flow/wave etc with just two 6105s on the same side of the tank or would there be much benefit in adding a 6095 on the center of the back wall to add some cross stream.

With narrow adapters I can only run 6105s at 12v, perhaps I will be able to move up to 18v once I have wide flow and not erode sand on the opposite end.

 

[rvitko]

The flow will definitely reach across the tank and I see no need for a 3rd pump, but in general I think it is preferable to be able to change the flow direction with one on each side.

 

[raidendex]

Don't really have enough room to place second 6105 on right side, plus I want to keep it clean if possible. A smaller 6095 would fit pretty well in the middle though, but not sure how much that would help.

 

[rvitko]

I would probably not add a 3rd pump. You might try it as is, if anything consider a Stream Rock to mount the pump on the other side in the rock work.