Color-coded packages for ease and accuracy in selectionConvenience of being pre-assembledFilled with Ultra-Activated carbon, removing waste particles, odors, and discolorationPlease read all label information on deliveryKeeps water crystal clearRemoves odors and discolorationEasy to useTwo small, disposable filter cartridgesFits Whisper In-tank 3iIt is recommended that you replace your Whisper Bio-Bag when water begins to overflow excessively from the Wonder Tube chamber, or once per month.
For the ultimate in convenience, choose assembled Whisper Bio-Bag cartridges. They are in color-coded packages, making it easier than ever to remember which cartridges to purchase on subsequent trips to your local aquarium store.
Brand: Tetra, Model: 25900, Size: Small, 2-Pack