Fluval Betta Poly-Carb Cartridge - 4pk

Designed for the Fluval Betta Aquarium Kit (20L), the Fluval Betta Cartridge provides effective chemical and mechanical filtration for your aquarium. Carbon infused, this polyester cartridge traps debris, removes harmful toxins, odors, discoloration, and leaves you with crystal clear water for your betta! Includes four replacement cartridges for easy maintenance. For best results, replace every 2-4 weeks.