Sorry didnt explain properly. Would be on its own system plumbed in, with its own elec pump. Would like to source a small 12v fan for it. Can only find about 7 inch ones which would be too big.
Im using 2 x motorbike fans on my mini turbo for extra cooling, they are probably 4-5 inches in diameter and move alot of air, they are only 25mm wide also. They are from a yamaha R1 or R6 i think. Its been a while since i bought them.
Maybe they would suit your application.
similar to these
http://www.ebay.com/...R-/271184833550
Sounds good. I'll check it out. Cheers