I’m tired of chilling my wort to 90 degrees with my immersion chiller, and then setting it in the fermentation chamber to wait until it reaches pitching temp. I live in South Carolina and the temperature of groundwater in the summer is around 85 degrees. I recently used a borrowed submersible water pump to recirculate ice water through the chiller post 100 degrees. It went from 100 to 60 degrees (pitching temp) with one bag of ice. The problem lies in being able to find a submersible water pump for under $50. Any suggestions? Amazon has one for $47, but that is still a bit much.