Fluval G3 Fine Pre Filters are designed for daily use with marine aquariums where suspended debris is minimal, or as a polishing cartridge for standard or fresh water aquariums. Fine mesh traps debris 75 micron or larger particles for unparalleled mechanical filtering results. Designed as a "no by-pass" system, debris remains caught between each pleat until it is removed and rinsed. Designed for top-loading, quick-release Fluval G3 filtration system.
