10 amps at 240 volts running copper for 1000' will require #4 (4ga) wire. I just checked OUR current prices for direct bury copper to run that distance, and it ain't cheap if you only buy one spool!!! You would easily pay 3x more than we do if you sourced it on your own. This stuff is a commodity and the price fluctuates by the minute. We buy truckloads of the stuff and have it negotiated, but it still ain't cheap!

Probably would at least cost 8K up here to set ya up so you're blowing bubbles with a 1000' electrical run to your pond from the source. And that would be only to run the compressor and maybe a few lights...