Three filters in one for cleaner water and healthier fish. All Whisper Legacy filters use easy to change Bio-Bags which remove particles floating in your aquarium while also removing discoloration and odors with it activated carbon. Biological filtration is provided by the Bio-Foam.Uses Large Whisper Bio-Bags. For aquariums up to 30 gallons.

• Designed for Use in Smaller Aquariums Up to 30-Gallon, Uses Large Whisper Bio-Bag Cartridges
• Three filters in one for cleaner water and healthier fish
• Uses Large Whisper Bio-Bag Cartridges
• Specifics 5.3 x 8.1 x 7.9 inches

Designed for Use in Smaller Aquariums Up to 30-Gallon, Uses Large Whisper Bio-Bag CartridgesTetra