Filter materials for quickly removing nitrates from aquarium water. 250 ml (170 g) binds with 900 mg of nitrates.

Main Features:
• Prevents and eliminates unwanted algae: Filter materials for use in aquarium filters to quickly remove nitrates.
• Usage method: Place the filter material in the universal bag and put it in the filter.
• Can be used multiple times by renewing it with sodium chloride.
• Designed only for freshwater tanks.