The Aqua Frog can sit on the edge of any pond and give you crystal-clear water. The Aqua Frog is unique. This patented device has an ultraviolet lamp surrounded by a quartz sleeve to assure that your pond stays clear while disinfecting the pond. While the Aqua Frog is a sterilizer, it can also be connected to any submersible pump or filter. This allows for easy installation and a safe environment. Since safety is important to us, all Aqua Frogs are UL listed and ETLc listed. We also offer a 15 foot electrical cord. The Aqua Frog is equipped with two 3/4" inlets, one in the front and the other in the back. This allows you to place your Aqua Frog at any angle. The Aqua Frog's outlet is 3/4". Another feature of the Aqua Frog is that it has a 2" clean-out on the bottom. The 14 pound Aqua Frog is made from high quality, UV-resistant, green poly resin. This product will not eliminate blanketweed/string algae. Not for use in swimming pools or saltwater.