A hidden pump sends gentle streams of water down the sides of the 2-foot-tall Aqualens acrylic sphere, which then pools in a 5-foot-wide steel dish. The sphere can also be illuminated. (allisonarmour.us)
Water features do not have to be massive in size. One like this usually has a water reserve like a 5 gallon bucket placed under the ground with a recycle pump. The rocks cover the reservoir and allow the water to flow back to the pump.