My dream is to have a huge guppy pond wrap around my home similar to a wrap around porch. It would start next to ourporch and wrap around to our back of the house and end at the corner covering only 3 sides of the house. Id like to form it with cement blocks and put flagstone on the outside to make it look good. Just the front part of the house will be a 12x60 pond, another 26 ft down the side, and 100 feet across the back. I'm thinking 3 feet high. The back will get direct sun in the summer and the front will be full shade. Winter the whole thing would get full sun. I know Guppies are tropical fish. Would they survive year round outside in a pond of constant moving water without a pond heater. I'm thinking with a pond this size it would be almost impossible to keep at 76-78 during the winter. I have also thought about making it divided so each section would be about 1000 gallons but would still be one long pond. Each section containing a different strain of Guppy or All one sex. I would put floating plants as well as underwater plants as well. Anyone got some ideas?