Fluval Betta Poly-Carb Cartridge - 4 Pack

Specifically designed for the Fluval Betta Aquarium Kit (6 US Gal / 20 L model), the Betta Poly-Carb Cartridge offers effective 2-in-1 mechanical and chemical filtration for clean and clear water.

Key Features: 

-Mechanical and chemical filter media
-Carbon-impregnated polyester cartridge 
-Effectively traps fine debris and contaminants
-Removes harmful toxins, discolorations and odors
-For best results, replace every 2-4 weeks
-Convenient 4-pack format