The Nexus 220 and 320 filtration systems deliver dramatically improved levels of water clarity for Koi ponds. Building on the success of the award winning Nexus range this new generation of filters cleverly combine mechanical and biological filtration into one advanced filter system whilst being incredibly easy to clean and simple to install. The Nexus 220 is suitable for ponds up to 18000 litres while for larger ponds the Nexus 320 can be installed on ponds up to 34000 litres.
