I want to start whirlpooling my wort in addition to immersion chilling. I was surfing around mcmaster carr for pumps and found a drill driven pump for 10 bucks with garden hose inlets and outlets. Any one use one of these? It's max flow is 6 gpm and max temp is 120, but I might try to push it and see if it will work at 140. I would like to see how the whirlpool setup works before investing in a nicer pump.