Tetra NitrateMinus Pearls for the permanent reduction of nitrate content when setting up a new aquarium. It removes an important algae nutrient, leading to a long-term improvement of the water quality, reducing care requirements.+ purely biological nitrate reduction for 12 months+ long-term improvement of the water quality in the aquarium+ algae growth is significantly reduced+ easy application because it is worked into the base gravel+ is invisible because it is worked into the base gravel, and is continually degraded by bacteria+ long-term reduction of the nitrate level to below 40 to 50 mg/l (depending on the aquarium conditions)+ new dosage every 12 months+ higher dosage (up to twice the quantity) can be used at any time to increase the effect+ Tetra NitrateMinus Pearls in granulated form for both freshwater and marine aquariumsDosage of Tetra NitrateMinus PearlsThe normal dosage is 8g granulate per 10 litres of aquarium water. New dosage every 12 months. In cases of increasing nit