- Nov 9, 2012
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I use a birdbath heater to prevent ice from forming in my bucket waterer (a 5 gallon bucket with four avian mister water nipples screwed into the bottom). The heater automatically switches off if the water level gets too low, and it's safe to use in a plastic bucket. So far I haven't had any problems with ice. I got hte heater and nipples on Amazon.com/