Well regardless of what pump I'm planning on using....have you considered what kind of heat a mag 1200 will add to your water?
I have the mag 950(piece of crap by the way) too much draw, not enough flow, and to top it off it adds 3 degrees to my water(yup tested it). At night my tanks with my 2 heaters runs at a nice 78....turned off the pump overnight the tank dropped to 75.2.
Do you have the ability to make it an external pump? Much less heat added to your water.
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