Nice. I think you just gave me the perfect idea. I'll build one like this as a pre-chiller then when the temp drops below 80, I'll drop a sump pump in and pump the cold ice water up through the IC and back into the bucket. I bet I'll be able to get my temp down into the 60's in no time. I think a trip to Lowes is in my future tomorrow morning.
Drinking on the keg: BPA, Brown Ale, Dry Mead, Wee Heavy aged on Oak, CAP
Drinking in the Bottle: