| Those small portable gas engine powered pumps (and pretty decent CFM in a big hose/pipe) arent too expensive buttttttttttt look at its cost versus if you will ever use it again or look at the rental cost if this is a one time project or maybe you already own one????? The smaller CFM electric pumps (kinda like a sump pump) arent too expensive (MUCH cheaper then a gas) but thats gonna take a much longer time (depends on CFM) to pump a lot of volume... Id say it depends on what you already own???????The rental cost of a gas unit??????? If you can buy a cheap electric or a more expensive gas powered BUT IS IT ANY USE TO YOU IN YEARS TO COME??? I just cant say sittin here, too many unknowns, cost,,,,,,,,how much use in future,,,,,,,,,CFM,,,,,,Total gallons,,,,,,,,rental cost,,,,,,,,,BUTTTTT a cheap electric sump pump type wont set you back much You mention SOLAR,,,,,they make small 12 VDC pumps but thats awful low CFM, will take forever to drain a pond maybe????? ALSO that would require a decent sized and expensive battery bank and solar panels THAT SOUNDS EXPENSIVE AND OVERKILL TO EVER DRAIN A POND TO ME I think Id run to the local rental shop and rent a big gas powered pump n be done with it, an electrric powered AC pump would do the trick also, is there AC power close by???? John T
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