i've got 100ft of 3/8" copper tubing that i wrapped around a corny, connected to a 200 gph pond pump. i fill a bottling bucket with cold water, drop the pump in, and when its half empty (having taking the real heat out) I drop 15lbs of ice into the bucket and let the ice water do the rest. i'm boiling to 60F in 10-15 mins normally. since i brew in the garage, cleanup is a breeze. i take the IC outside, and blast it clean with the hose. on brew day, it gets a rinse in said bottling bucket of cold water.