Tetra Whisper In-Tank Filter 20i with BioScrubber - 10-20 gal

Whisper internal power filters are the ultimate in quiet, convenient 3-stage filtration. The dual-sided mesh of the Bio-Bag catches debris and fish waste, while the activated carbon absorbs odors and discoloration. Biological filtration is provided by the Bio-Scrubber. Bio-Scrubber's anti-clog design provides complete biological filtration with the convenience of less maintenance. Because the Bio-Scrubber has a solid back, water is forced to flow evenly over the bacteria-rich bristles. The Tetra Whisper In-Tank Filter 20i with BioScrubber is designed for use in aquariums 10-20 gallons in size.