Designed specifically for the Fluval G6 filter, the G6 Fine Pre-Filter Cartridge traps microscopic debris (75μ micron or larger) for unparalleled mechanical filtering results. It can also be used as a polishing cartridge for standard or freshwater aquariums

• Mechanical filter media
• No by-pass – debris remains caught between pleats until it is removed and rinsed
• Improves chemical and biological filtration efficiency
• Designed for daily use in freshwater and saltwater aquariums
• For best results, rinse cartridge regularly as solid wastes can break down into soluble wastes