Simple to install. Pond Ionizers are a great solution for string algae in ponds, Pondless Waterfalls, and other decorative water features. In addition, it can assist with green water algae in many cases. Ionizers drastically reduce algae, pond maintenance and helps provide crystal clear water without the use of chemicals or a UV. A microprocessor inside ionizers' system control panel causes the outermost atoms of copper, silver and zinc to lose an electron, creating a positive ion. The positive ion attempts to flow from one of the Probe's bars to the other and is swept away by the flow of water where the ion can begin to treat the water. Our Ionizers feature self cleaning probes, using reverse polarity to prevent scale and debris build-up on the Probe's bars. The metal alloys in the Probe are scientifically blended and tested to produce maximum results. Tested for over 7 years now, Ionizer Systems are safe for fish and plants and not toxic to any animals that may drink from the pond.