Calcium and Nitrate Reactors

This is the version that uses sulphur.
Denitrification filter for aquaria up to 400 litres. (c. 100 gallons)
The Aqua Medic Nitratreductor 400 is a completely sealed biological filter. It is operated at a very low flow rate so that an oxygen free environment is created wherein naturally occurring bacteria reduce nitrate to harmless nitrogen gas.
The filter can be installed in almost any position, inside or outside the aquarium or the cabinet. The water flow is provided by connecting to a standard canister filter, power head or by pass circuit.
After maturing the filter can keep the nitrate concentration in a normally loaded aquarium up to 400 litres at a very low level.