Here we go:
The valves and snap connectors are so I can disconnect it and move it in and out of the shed without having to drain and refill every time, which would be a pain :angry-banghead:
I've gotta sort out the kinks in the clear vinyl tubing, I'll get some elbows for it.
Both sets of pvc tubing are just sitting in place and so can be moved out from along the walls as need be. Everything packs back under my bench with enough room for my 60, 23 and 2 x 11 L fermenters.
Each fan of the radiator runs on its own 25 A 12 V DC transformer.