Designed specifically for the Fluval G3 filter, the G3 Fine Pre-Filter Cartridge traps microscopic debris (75μ micron or larger) for unparalleled mechanical filtration

• Mechanical filter media
• No bypass – 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