Every koihobbyist is hoping to avoid infections and parasites among his koi population and an experiencedkoihobbyist will very quickly suspect the presence of parasites on a koi. Most parasites are not visible to the naked eye. In order to correctly identify any of those parasites you will need the use of a microscope with a built in light and a magnification of a minimum of 100 times to a maximum of 400 times. These are easy to use and are an essential piece of equipment for any serious koi keeper. Please feel free to contact us if you have any questions about our Microscopes.