1/4 HP Water Pump, 1250 gph by General Hydroponics. $179.95. Inline. powerful, but small. 1 inch output. ceramic/graphite seals. centrifugal pump. The TNC centrifugal inline water pump is powerful and dependable. This water pump moves http://www.clanorchids.com/mm5/graphics/00000001/ngw/1250 GPH through 1? pipe thread fittings and has a dependable ceramic/graphite seal. The TNC water pump is used in the AeroFlo2 - 60 site units.
Throught I'd recommend a Swedish heater I had in a former boat - the "POD", also called "GeHå-värmaren" (= "GeHå-heater"). It's a design from the 1950s and is basically a large kerosene lamp with a metal/water heat exchanger, and a stovepipe. The h/exchanger is then connected to a series of radiators in the boat. Natural flow in the water circuit is most often enough, if not one can install a small inline water pump. The power is 1270 W (4300 BTU/hr).
TSG Inline Centrifugal Pumps for conveying water or other liquids that physical and chemical properties similar to water, like industrial and urban water supply and drainage, high-rise building pressurized water, garden irrigation, fire boost etc.For more, Pls email:Tobeepump@gmail.com
Drag Race Car Parts and Accessories - Big End Performance Electric Water Pump Remote Inline Mount BEP60350, $197.76 (http://www.dragracecarparts.co/big-end-performance-electric-water-pump-remote-inline-mount-bep60350/)