The Fluval Nitrate Filter Cartridge is for use with the Fluval Advanced Filtration System. The G6 will remove up to 24000 mg of nitrate ion in fresh water aquariums, and the G3 will remove up to 13000 mg of nitrate ion Nitrate concentration should not exceed 20 mg/L in freshwater aquariums; Planted aquariums require approximately 5mg/L of nitrate as a source of nitrogen for healthy plant growth. In a 300 / 600 L freshwater aquarium with a 30 mg/L nitrate concentration, the use of the Fluval G6 Nitrate Filter Cartridge will quickly remove all excess of nitrate in a couple of days. If left in the filter it will then maintain a low nitrate level for a period of time that is strictly dependent on the type of aquarium (quantity and type of fish, type of fish food and so on). Nitrate is irreversibly trapped and bound and will not leach back into the water. The continuous use of the Fluval G6 Nitrate Filter Cartridge in aquariums with persistent nitrate problems is an effective solution against nitrate accumulation. If used as a quick solution to reduce elevated nitrate concentrations the cartridge can be removed once levels have normalized and then stored until required.
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