No more lugging buckets and spilling water. It's so easy and fast with the JBL water change system that it’s fun! Use the adapter to screw the dedicated water jet pump to your tap, and inside the aquarium connect it to the substrate cleaner included by means of the 8 m long hose. Briefly turning on the tap will create suction - and the water will flow off. Now clean the bottom of the aquarium with the substrate cleaner until one third of the aquarium water has been sucked off. Then set the water jet pump to "Fill" and open the tap again. This refills the water into the aquarium. Add water conditioner and you're done! It really doesn't get any quicker, easier, more professional or more convenient than this!
Deutsche Version: https://youtu.be/L9Dn2Tl-oZ8 (JBL PROCLEAN AQUA IN-OUT - Wasserwechsel im Aquarium leicht gemacht)
English Version: https://youtu.be/G727-eZS0w0 (JBL PROCLEAN AQUA IN-OUT - Easy water changes in the aquarium)
Nederlandse versie: https://youtu.be/YEPA47-tpMM (JBL PROCLEAN AQUA IN-OUT - Moeiteloos water verversen in het aquarium)
Version française: https://youtu.be/hSflHoykfIo (JBL PROCLEAN AQUA IN-OUT - Pour un changement facile de l’eau de l’aquarium)
You can find out more about water changes and cleaning the substrate in the Themeworld Aquarium under: Water change .