I went for a water-cooled setup in a rackmount case.  Next step is to throw it in the rack and connect it to the hot tub.


Pigtails from each waterblock attached to inlet/outlet manifolds (made from PVC pipe fittings), with fuel filter on the inlet:


Reservoir made from 5 gal bucket and fountain pump:


Car heating block as radiator, with fan:


And, since I believe in a diversified portfolio, carrots: