Search query: tetra 20 gallon tank
Product: Tetra Whisper Bio-Bag Disposable Filter Cartridge 3 Count, For Aquariums, Large
Brand: Tetra
Highlights: REPLACEMENT CARBON FILTER: Keeps aquarium water crystal clear – removes odors and discoloration
CATCHES DEBRIS: Dense dual-sided mesh filters debris and fish waste
FITS TETRA WHISPER WATER FILTERS: Color coded to make it simple to remember which replacement cartridge size to purchase
CONVENIENT: Replacement filter cartridges are fully assembled and ready to use
USAGE: Change monthly or sooner if needed
ESCI relevance label: S