Assuming you mean a dock de-icer ....
I use a bubbler; made from 3/4" PVC pipe (1 hole drilled every two feet) and a linear air compressor. Other types of air compressors are too expensive to run.
Many people use a circulator (water tight motor with a propeller on the end), but, these too, are expensive to run.
Either one can be attached to a thermostat so that it only runs when the temperature dips below 35 deg.
The smartest people have a crank-up dock; costs nothing to run; no problem with extended power failures.
J
Last edited by jimbob1603; 09-08-2005 at 10:50 AM.
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