Just wondering, if i got a usual 30 dollar heater, or 5 of them... could I out them in my filter and keep my 1500 gallon pond heated during the winter? If I slowed the rate to 200 gph, which it already is, and runs fine because of my flitering design and amount of plants, could I keep the temps at around 65 deg? It takes water from the bottom of the pond which is 3 feet deep. The water temps can get to the 30's out here and it gets really snowy. The pond is 11.5x7x2-3ft deep at the deepest spot. The soil is mostly clay, like you can mold things with it, and one 11.5 foot side is on the concrete foundation of my garage because I dug right down it, There is a shallow spot that warms up really fast and is in the direction of the current. What temp do you think this would make it and would it work?
