Aquatlantis EasyBox Coarse Foam Cartridge – Large

The large Aquatlantis EasyBox Coarse Foam Cartridge is a durable plastic cartridge designed to hold various types of filter media. The coarse foam material’s large, flexible porous surface encourages the biological decomposition of harmful pollutants. Helps to provide exceptional water purification. Completely safe for fish and plants. Recommended replacement every 3-5 months.