Thanks for the info about using an air compressor but it's the low up-front costs and relatively low electric bills that come with a $65.00 1/6hp plastic sump pump that attract me. In addition to using less electricity, the smaller pump would be much quieter what with less water being moved about on the surface.
Even if the open water around a dock freezes solid, this is not an uncorrectable problem. Fours inches of ice can be smashed up with a five foot long, railroad pry bar and probably with an eight pound sledge hammer, as well.
The continuous running use I could get out of a $65. sump pump is an unknown and, sure, it is not its' intended use, but how long will it go? Anyone use one?
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