Features: Premium absorbent carbons cubes triples water purifications efficiency, removing impurities and odors for clear aquariums environment while fittings 90% of filter systems. Environment protecting renewable carbon component lasts 2 as long as standard filters, strong adsorption, quick water purifications. For aquariums enthusiasts pursues low maintenance solution and environmentally users prioritizing durability, cost effective water care. Enhances water quality in homes fish tanks, office aquariums, or large displays where quiet operations and odor control is essential. Universals cubes shape ensures compatibility with hanging on back filters, canister systems, and submergible pumps across freshwaters or marine setups. Specifications: Dimension:11.5×11.5×11cm/4.5×4.3×4.5in Component:plastomer Package Includes: 1pc Aquariums Carbon Cubes note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.