About This

• Medium Pre-assembled Replacement Filter Cartridges Compatible with Whisper Bio-bag Filters: Compatible with Whisper Bio-Bag External Filter PF10, Whisper External IQ10, Whisper 10i Internal Filter and ReptoFilter 20 gallons (90 GPH)
• An Exclusive Design of Front Green + Back White Dense Dual-Sided Mesh: The aquarium filter cartridge is easy to distinguish front/back, easier to install and to use, only need to rinse it under running clean water or aquarium water
• 4 Stage Filtration Help Keep the Water Crystal Clear and Healthy: The fish tank filter cartridges compatible with whisper power filter 5-10 Gallon added activated carbon and processed zeolite, effectively filter and absorb impurities to keep the aquarium environment clean and healthy
• Efficacy of Zeolite: Adsorb ammonia, heavy metals and other harmful components. Balance the PH value of the water body. Improve the fertilization efficiency make your aquatic plants, nitrifying bacteria grow faster, live more comfortable and more health
• Assembled Replacement Filter Cartridges and Ready to Use: With pre-assembled filter media and frame, the top is sealed, We recommend that you replace the filters every 2-4 weeks to maintain water quality. (It depends on your aquarium system)