Whisper Large (Regular) Bio-Bag Cartridge - 1 Pack

Authentic Whisper Filter Bio-Bag disposable cartridges. Each cartridge consists of a plastic frame that is surrounded with a white filter bag that is filled with activated carbon. The plastic frame is specially designed to increase aerobic bacterial action by up to 200%. The fluffy filter bag is designed to remove larger particles from the aquarium water. The ultra-grade carbon is of the highest quality and will help to move odors and organics from your tank water. Fits the Whisper C, 1, 2, 3, 10-20, 20-40, 20, 30, 30-60, 40, 60, Triad 1000, 2000 and 3000 filter models. Each cartridge measures approximately 4-1/2" x 6-1/2".