I have a pre-chiller and immersion chiller connected. I put the pre-chiller in a cooler and cover it with ice and run the hose through it to the immersion chiller that it sitting in the wort. It takes about 30-45 minutes to bring the wort down to sub 80 degree temperatures. I'd like to reduce this time. I do have a 10 gallon pot and even the 50' wort chiller is still small by comparison. I think this is causing the wort to displace too much and the temperature not to drop evenly. What's the simplest way to circulate the wort around the chiller to bring this temperature down faster? Any suggestions would be much appreciated.