All the components are perfectly suited to each other and require very little maintenance: connect, switch on, and enjoy! Crystal clear pond water and the best living conditions for your plants and fish! Our innovative PRESS circulation filter systems combine top-notch filtration performance. Thanks to the BACKWASH technology, the system cleans itself effectively without needing to open the filter: simply turn the lever on the cover so the water flows in reverse through the device, cleaning it. The built-in circulation pump allows you to supply waterfalls that are situated higher up. There's no issue using it beneath the surface of your pond water.