Lees Carbon Cartridges for Under Gravel Filters for Aquariums

Lees Cartridge Carbon Dispenser is an easy-to-install cartridge filled with high-grade, activated carbon. Disposable Carbon Cartridges keep tanks sparkling clean! Lees Cartridge Carbon Dispensers are designed to fit our Economy, Original or Premium Under Gravel Filters. Fits Lees undergravel filters Replace cartridges every 2-3 weeks Carbon cartridges help keep a sparkeling clean aquarium