I want to increase the flow in a 6 foot, 125 gallon reef at work. The tank contains LPS, softies, and a few SPS. Presently there is a RIO 12HF main return pump and one Maxi-jet 1200. This is what was installed by the LFS. The tank has one end overflow, but I would think that it would flow more that the 12HF (it is at 4 foot of head) So, what to do, mod the MJ, put a 620, 820, 1100 SEIO, or I was thinking of going with a Wave2K in the end opposite of the overflow. Please advise. thanks tommy