I currently use both the Maxi jet 1200 and the aqua lifter on separate tanks. The Aqualifter works fine on my main display, and the maxi jet is set up on my frag tank. I've never had an issue with either pump, just with my poor engineering, so make sure that you don't run the top off line so that there can be a siphoning effect from your tank back down to your ato reservoir. If you use the Aqualifter you can probably run the top off line to your reservoir where your return pump in your biocube is. Shouldn't have to really do any modifications and won't really have the ability to siphon back down.