Product: Aqua-Tech EZ-Change No.2 3-Pack Aquarium Filter Cartridge for 10 to 20 Power Filters
Brand: AQUA-TECH
EZ-Change #2 Filter Cartridge fits AQUA-Tech 10-20 Power Filters
Contains AQUA-Tech Premium Activated Carbon
No messy assembly required
Changes in seconds just shake and rinse
For best results, change every 2-4 weeks

Search query: 20 gallon aquarium filter
Relevance: Complement