Tetra 41004 Stay Clean Bio-Bag Large 4 Pack - Eco-Friendly Fish Tank Waste Disposal Bags for Aquarium Maintenance & Water Changes

Features

The whisper Bio bag is an easy to use disposable Filter cartridge that provides additional biological filtration to eliminate harmful ammonia

Filter pads trap particulate matter while carbon removes dissolved wastes, odors, and gases. Sizes for whisper Bio bag Filter cartridges

Easy to assemble, easy to replace