Evolution Aqua NEXUS 220 + Filter Koi Pond Filter System Brand new in box
Evolution Aqua NEXUS 220 + Filter Koi Pond Filter System. The Nexus 220 + is suitable for ponds up to 18,000 litres(4,000 gallons) while for larger ponds the Nexus 320 can be installed on ponds up to 34,000 litres (7,500 gallons).