Flow in a 60g cube

[MK300]

Has anyone had success with a 60 cube with a center overflow? I have a mixed reef with LPS towards the bottom and SPS closer to the top. I have 2 return nozzles plus a pair of Neptune WAV pumps on the back wall on either side of overflow. I have to dial the WAV pumps all the way down to 15% to keep the LPS happy. I really do not think this is enough flow for the SPS towards the top.
Has anyone had success with this type of setup?

 

[blaxsun]

I do have SPS in the center of my tank with gyres on either side facing inwards and another pair on either side of the overflow. They seem to be doing ok.

 

[MK300]

I think the actual cube shape is what is giving me issues. Your tank appears to be rectangular? Maybe the gyres would be a better option though?

 

[Lavey29]

Maybe move them to the side versus the back wall? How far below the surface? I keep my Mp40s 3 inches under the water line so SPS get strong flow and LPS low to moderate.

 

[MK300]

I am about 6” below water line. I will try raising a bit. Do you get any type of vortex at 3”? I was trying to avoid pumps on the side panels but I may need to just bite the bullet! The cube is definitely a challenge!