The mag drives definitely put out some heat, but they came with the tank... and work, so they aren't a priority for replacement. They also use quite a bit of power, so the plan is to switch to two DC pumps once my wallet can handle it.
Edit: I don't use a heater, except for ~ 1 week a year. Yay Florida!
Edit: I don't use a heater, except for ~ 1 week a year. Yay Florida!