The wave box will just continue to do its thing, the 6150 would be used to produce a gyre. I have a 6ft by 2ft by 28" tank, since I changed to the flow rectifiers and this is by sight of the surface movement only, I have not added any beads or anything, but the flow goes down 6ft, and wraps around and comes back 2ft+ on the other side. I use 2 6055's on one end and 2 6150's on the other and alternate them so left front 6055 is on and right rear 6150 and they alternate every 6 hours, the 6055 further boosts the flow on the other side down the rest of the 6ft.