Stitokg 10-Pack Medium Aquarium Filter Cartridges - Compatible with Tetra Whisper Bio-Bag，Fit for 10i/IQ10/PF10/ReptoFilter, 4-Stage Filtration for 5-10 Gallon Fish Tanks

Precise Compatibility & Easy Replacement - Designed to fit Tetra Whisper Bio-Bag filters including 10i, IQ10, PF10, and ReptoFilter. Simply rinse and insert for a perfect fit in 5-10 gallon aquariums

Stage Advanced Filtration System - Features dual-sided mesh for debris, premium activated carbon for clearer water, zeolite to control ammonia levels, and an ion mineralization ball to enhance biological filtration, ensuring a healthy habitat

Generous Package & Long-Lasting Use - Receive 10 pcs of premium filter cartridges in sealed packaging. This ample supply reduces replacement frequency and ensures long-term water clarity for your aquatic pets

Premium Materials & Reliable Design - Crafted from reliable activated carbon, zeolite, and ion mineralization balls, our cartridge is durable for effective and long-lasting filtration performance without premature failure

Ready-to-Use & Regular Maintenance - Each cartridge is individually sealed for freshness and ready to use. For optimal water quality, we recommend replacing the filter cartridge every 2-4 weeks, depending on your aquarium's bio-load