Tetra Whisper Bio-Bag Disposable Filter Cartridges help keep aquarium water crystal clear and remove odors and discoloration. The dense, dual-sided mesh catches debris and fish waste. Ultra-Activated carbon adsorbs odors. Each package is color-coded to make it simple to remember which size to purchase.

• Convenient, easy-to-use disposable filter replacement
• Activated carbon absorbs discoloration, contaminants, and odours
• Double-sided dense mesh traps fish waste and debris
• Compatible with Tetra Whisper 20i and PF10 Power Filters

Available Sizes: Large Single Pack, Large 3-Pack