My DIY chiller pics This pic shows the general idea. I small refrigerator with a coil of hose inside with holes for in and out. I used quick disconnects on the ends. The pump in the tank was a RIO 600. I decided to enhance the cooling ability by putting the coils into a plastic bucket that had rock salt and water in it. I hooked it all up, had no leaks, the water trickled out just as I had hoped. The slower the flow, the more it would chill running through. I scrapped the whole project needing a major mod that would make all the difference; after all, none of us are Rockefellers. Instead of the poly tubing, I should have used either stainless steel, or aluminum; as the heat/cold transferrence would have been much more efficient. With the poly, the fridge ran all the time, barley keeping the tank target temp at 78 degrees. I bought a commercial one, that is now giving me problems...shoulda just bought the SS tubing...I still have the fridge...never give up!