If you have power so close to the pond I am wondering why you would want to use solar?
I ran my power 650 feet to the pond, and have been running a low amp. pump 1/2 amp draw for a few months now but I have a 1/4to1/3 acre pond for the money I wonder if you could station a couple of the smaller units with 9 inch diffusers in different locations. I am just putting thoughts out there as I havent much expertise with this stuff, only what I have picked up from here. have consider that if my small compressor wasnt working well enough that for 50 bucks I could add another compressor inline and double my air output but it works really well, as far as I know.
