It's a while since I posted here and to be honest I'm bit hazy on some of my w/c so I though I better ask. The new project is in a big server case and I'm fitting an Alphacool NexXxoS Xtreme III vertically between the drivebays and the board. My only question is whether I should have the onnections at the top or bottom. at the bottom will make it easier to drain the system but ther is a possible air-trap. The pump is a DDC pro so should have be enough to flush it out or is it better to connect at the top?