The AppaZappa works by sending a small amount of current through the body of the pest for just a few seconds. Targeted pest removal; Just poke the pest and zap it! No need for a water change or a hospital tank! Just use the needle tip or wide area burner to target a pest and zap it. It has a built-in high power LED light in the handle, so that the operator can see in dark areas of the reef aquarium. It completely kills Aiptasia and Majano anemones and weedy types of encrusting corals like green star polyps. You can even use it to remove unwanted Polychaeta (Bristle worms) and coral munching nudibranch. This device is safe for coral, fish, invertebrates and the operator with their hand(s) in the water and kills only the targeted pests. With the included changeable different style tips, this tool is able to be used over and over again, giving the reef tank owner total control over weedy pests. There are pesticides that can be used to remove these pests but they are expensive, one-time use and risk killing the corals, fish, and invertebrates in the reef tank. The AppaZappa eliminates the need for these toxic, dangerous chemicals. If you have any questions please feel free to ask! The AppaZappa complies to all EPA regulations and is made in Missouri, USA.