The Nexus Filtration System revolutionizes the way ponds are filtered. The Nexus is a cleverly combined mechanical and biological filter creating an effective, high performance filtration system delivering superb water quality and clarity for ponds from 1,170 to 8,775 gallons.

The Nexus is the first filtration system that can be tailored to provide all fish keepers and pond enthusiasts with unbeatable performance at affordable prices.

Kaldnes Moving Bed™ Process, exclusive to Evolution Aqua, is included within the Nexus. This uniquely designed media provides amazing water quality and clarity, especially when it has reached full maturity. Kaldnes bio-media is maintenance free allowing the biomass to fully mature, which maximizes its effectiveness and creates constant parameters.

Nexus is designed to accept future add-ons, for example, auto-purge and digital parameter read-out.

Nexus: How it works:
The standard system consists of a primary settlement vortex which then up flows through an efficient filter block before entering the biological stage, which consists of the Kaldnes Moving Bed™ Process. Kaldnes has been proven to be many times more efficient than static media. It is by using this process that the maufacturer has been able to achieve a smaller footprint. For the user who wants the ultimate performance, the unit can be upgraded at any time to include the revolutionary Answer mechanical filter. As Peter Waddington, author of Koi Kichi said, "Quite simply the most amazing pond invention I¹ve seen in my life. It will revolutionize fish keeping as we know it."

Cost Benefits
Many customers overlook when selecting a filter system the full cost implication of one system over another. Here are some of the other cost benefits, which maybe experienced by selecting the Nexus system.

• Massively reduced costs due to a smaller excavation area and construction of filter house in gravity fed applications
• No expensive interconnecting pipe work between multiple filter bays
• Minimum water usage through maintenance (heating and purification of replacing water can be a large cost)
• No need for 4 inch slide valve as there is an integrated valve
• All ball valves and connecting fittings are included with the Nexus
• To increase the biological filter performance at a later date simply add more Kaldnes media instead of buying a new filter system
• The Nexus filter is designed to last
• Improved water quality can lead to less risk of fish loss

• Superb water quality and clarity - healthier fish
• Uses scientifically and time proven fish farming and waste water treatment technology for bio-filtration - healthier fish
• Zero maintenance at biological stage resulting in no loss of bio-mass, giving consistent performance - healthier fish
• A biological capacity that can grow with your fish, just add more Kaldnes media - healthier fish
• Can be upgraded to accept the revolutionary Answer mechanical filter - healthier fish
• Can be gravity or pump fed
• Massive performance from a small footprint
• Easy to install, includes all valves and fittings
• Comes complete with adjustable connectors on both inlet and outlet valves
• Sculptured and robust one piece moulding
• Unparalleled value for money

Koi are typically fed at between 1% - 2% of body weight per day. Therefore, for every 5gms of food fed, a liter of K1 media is required. At Evolution Aqua, our filter designs are based on the higher rate of 2% per day.