You can benefit from several functional advantages and unique intelligence with the EHEIM Professional 5e. With everything an aquarium enthusiast could want, the EHEIM Professional 5e is our best external filter to date. Wireless control and individual programming are available for each function. Because of the large filter volume, the electronic system provides strong performance, maintains a steady flow, and keeps an eye on everything. In addition to the renowned smooth EHEIM performance, the maintenance intervals for the biological filter material are significantly extended by the ingenious design and the control of the electronic flow. Nothing is lacking thanks to the expert craftsmanship, premium materials, and the well-known "Made in Germany" dependability, all of which are backed by a three-year warranty. Four versions of the filter are available, including