About This

• 1. Perfect Fit for Compatible Tetra Whisper Bio-Bag Filters Includes 10 medium replacement filter cartridges (3.5" x 5.5"), compatible with Whisper Bio-Bag External Filter PF10, Whisper External IQ10, Whisper 10i Internal Filter, and Compatible TetraFauna ReptoFilter 20 gallons (90 GPH)—ideal for 5-10 gallon aquariums.
• 2. Benefits of Zeolite & Maifan Stone Zeolite absorbs ammonia, heavy metals, and toxins, helping stabilize pH levels for balanced water conditions. Maifan stone gradually releases essential minerals, enhancing water quality for healthier fish, nitrifying bacteria, and thriving aquatic plants.
• 3. Advanced 5-Stage Filtration for Cleaner Water Features dense dual-sided mesh for debris capture, ultra-activated carbon for deep purification, zeolite to absorb harmful substances, ceramic media to remove heavy metals, and Maifan stone to enrich water with beneficial minerals—ensuring a healthier aquatic environment.
• 4. Quick & Easy Installation Turn off the filter, remove the used cartridge, rinse the new one under clean or aquarium water to remove dust, then insert it into the filter chamber—ensuring a perfect fit and optimal performance.
• 5. Reliable After-Sales Support For best results, replace the cartridge every 2-4 weeks based on tank conditions. We specialize in aquarium filter cartridges and are always ready to assist with any concerns!