MNFish2 - Are you happy with your solar aerator? Can you repost the link to how you built your solar aerator and approximate cost? I think I want one of those.
There are some limitations to this design but overall its performance has been acceptable. The one limitation is having to replace the pump every couple of years. You may not experience this since your location isn't in the frozen tundra. I was very surprised to see the compressor running when I went to the farm. -30 actual temps is way below the recommended lower limit operating temp.
I will search for the thread I posted for the bill of materials. It's basically made up of a 100w solar panel, 12V linear diaphram pump(Thomas 1.4cfm free flow), and a 12V LCB (linear current booster). The 12V LCB may be tough to source. At the time I was designing this system I had to get custom electronics made. That was quite awhile ago, maybe they are off the shelf components now. There is also a pressure gage and blow off valve.
