I am going with 80 mm fans below my dc 3.2's. The pic below is the plate the pump will mount on. I cut out a circle to match the bottom of the pump and also there are 2 holes in the pump that the foam pad cut around so i made holes there too. The 80 mm fan is mounted to a 80mm to 60 mm duct to direct the air and sits about 1/2 -3/4" from the bottom of the pump.




I saw pic of people using a heatsink but my concern was how much use it was when the sink was mostly contacting the plastic case of the pump.