I've used a submersible pump in ice water too, but found that the pump would heat the water it was in. It was a tad counter-productive. I'm trying to figure out a better method. I am wasting too much water during the wort-chill. Any suggestions? Thanks.
Dry Creek Brewing
Enjoying: Saison de Jardin, EdWort's Haus Pale Ale and Hefeweizen, White House Honey Ale