Take your Koi pond to the next level with the Nexus 220 Plus filtration system. Developed by Evolution Aqua, this advanced system offers the very latest in Koi pond filtration technology. Now enhanced with new K Media, it provides even more effective biological filtration and quicker filter maturation. It is also factory-fitted with attachments that make it easier to upgrade to the Nexus Automatic Cleaning System. This filter system excels in both biological and mechanical filtration. Water from your pond enters through the inner chamber that acts as a vortex to allow larger solids to settle. The water then proceeds through the Eazy filter, where finer particles are removed thanks to the K1 Micro media. Finally, water moves to the outer chamber where the K Media Moving Bed is located for biological treatment before returning to your pond. This biological treatment involves bacterial breakdown processes that turn harmful Ammonia and Nitrite into less harmful Nitrate. What sets Nexus 220 Plus apart? – Improved mechanical filtration with the new Eazy filter design, capturing fine particles more effectively. – Faster filtration and improved water clarity. – Easy to clean and maintain. – Excellent solids handling capacity. – The Nexus 220 Plus MUST be installed on a solid, level base to avoid damaging the filter and invalidating the warranty. Installation Options: The Nexus 220 Plus can be installed either in a GRAVITY-FED or PUMP-FED setup. In a GRAVITY-FED installation, your pump returns filtered water to the pond. In a PUMP-FED setup, water is pumped into the filter, and then returned to the pond via gravity. With unparalleled features, the Nexus 220 Plus offers the ultimate in Koi pond filtration. You can buy the Nexus 220 Plus here