Aqua Medic Deniballs are great for fresh and salt water aquaria to help reduce nitrates available from Swell UK.
DENIBALLS are a filter material and bacterium food for the Nitratereductor, made from a special biologically based plastic material.
In the absence of oxygen, anaerobic bacteria metabolize this material.
The bacteria are used for the reduction of nitrates - reducing nitrate to nitrogen gas.
For the NITRATREDYCTOR 5000, about 5 litres (1.3 gallons) are required.
Changing the DENIBALLS after approximately 12 months is recommended to ensure safe and maintenance free denitrification in fresh and salt water aquarium.