pond de-icer
I had a 1600 gallon pond. two shubunks total fish load. froze over. both died.
Kmart has double outlet wave castle air pumps.
get a big airstone and have that about 6 inches down.
at the LFS just get a100 watt aquarium heater and hang that right below the airstone
by a couple inches. this will work to below zero temps. INgrid
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