Well they got too big so I started this project this last winter. I built a small pond and insulated the crap out of it to see IF I could keep a pond here in Iowa in my basement at least 85 degrees in the middle of winter. Well it worked. Uncovered I was able to hold a lil under 500 gallons at 85 degrees with only 550 watts. So once spring rolled around I tore it down and put up the rough draft of my final product. A work in progress but here's a few pics.http://i71.photobucket.com/albums/i145/rflwagon/PICT0102.jpg