I'll soon be setting up a 125 gallon American cichlid tank, probably mildly stocked with Thorichthys Meeki and Swordtails. Plan on adding another Fx6 to what I have. Is anyone running a similar setup? Do you use one mainly for bio media and the other for a mix of mechanical/bio. What kind of maintenance schedule might I expect. Like clean one every 2 weeks an alternate? I realize there's a lot of variables, just looking for any similar setup and a ballpark estimate.