Hi there! I recently noticed that the little drainage tube in the back of my fridge keeps blocking up with ice. As a result massive condensation develops around the ice which eventually drips down the back causing the bottom of the fridge to fill with water the whole time. Apparently the insulation around the drainage pipe is too thin, causing the cold temperature to freeze the water. The drainage tube is about 8mm in diameter. So I was wondering....is it possible to build a small battery powered heater wire that can be placed inside the drainage tube to prevent the tube from freezing up?