Marineland Cartridge System 3 Explorer & Hex 3 Pk

These are the replacement filter cartridges for the Eclipse System Three the Eclipse Explorers and the Eclipse Hex 5 tanks. Each cartridge contains 1 oz of super activated carbon. Just shake rinse and install. Ensures even carbon distribution and no water bypass. For best results change monthly. 3 Pack Rite-Size Cartridge: Z Size: 3"long x 4 1/2"wide x 3/4"thick