For ultimate safety low-voltage AC is the answer. The New Rena OEM Low Voltage water pump kit with halogen light can replace many pumps with a 3-wire heavy duty cord with a much smaller electrical cord. Since many taller fountains have a separate light this can allow you to replace or add a light to any existing fountain or patio-pond.
It is designed for both both fountain and mini-pond use and is UL approved indoor and outdoor use. It is an ideal replacement for pumps with those bulky 3 wire grounded cords that are difficult to manage in a tabletop or patio style fountain. The pump has a convenient front-mounted flow control dial.