"Second Nature" is a brand of aquarium power filter. The pump's are a Wallmart special at $9.95 USD. The pump is sealed and will prime well from dry start. The unit is sealed and has a long life. I will need to build 3 to 5 per year, so efficiency, and cost to some degree are not factors. The link is great. Off the top, does anyone know of a small module inverter manufaturer? This is for my 1/144 scale Bismarck battleship. The DC pumps that are commonly used do not prime well, 1 ship sunk due to a non primed pump in the last battle. The units I looked at today were not sealable. The cost and size was not the prime issue, just the water proof part.

Thanks for the infomation,

Bobby Clark