If I went with the Tunze Turbelle Stream 6080: Output: 8500 l/h; 2250 gal/h plus the return on my sump, can't remember what it will be now but a mag 7 or 9 maybe?? Would that be enough flow for a 125 reef? Does this only push the water out in one jet, so to say, like a powerhead? how is it different? Do you use the magnet to keep yours up? Where do you position it at in the tank?
Edited to add that I saw that they have some you can control..but they are more $$$. Is that something I should consider or will this work fine? Maybe I can go up to that kind later but after the initial hit of the tank, stand, canopy, MH+T5 lights and 130lb live rock, I need to be more conservative for now. But the above 6080 is very doable if you think it would work.
Edited to add would 2 of the smaller ones, one on each end of the tank, be better than one bigger one?