Improvement to flow needed

[bioteacher]

Am looking for some suggestions on placement of power heads to improve flow in my tank. I have a 125 gal all glass display flat front. 2 built in overflows in back, not in corners.

Currently, I have a mag-18 return pump rated for 1800 gph, but with head and loss due to plumbing I am estimating that the pump might be giving me about 1300 gph.

I have one koralia head that provides 1200gph additional flow. The return pipes are split with 2 bendable nozzles on each side. One each side I have these bent so that one nozzle angles into the tank at about 45 degrees and the other pushes somewhat toward the front glass. My powerhead is in the center of the aquarium pointing to the front glass. I have another koralia 1200 that I can add in.

Not sure if I should leave the center one alone and add the other to the side wall or if I should move it so that I have one on each side wall.

Please see pix and provide any suggestions. Thanks in advance. You guys and girls are great! Sorry if pix unclear. Glass is dirty. Need pwc later today.

Btw, the tank is 4 foot by 2 foot by 2 foot.

 

[Grizz]

I'd put the koralia's on the sides and aim them at the front center