From industry firsts to industry standards, Marineland products are designed with both performance and style in mind. We push precision and power beyond the expected and listen to our loyal customers to make our products even better. We do this because at the heart of our innovative spirit is a desire to help hobbyists everywhere do more, create more and, most of all, enjoy more. So whatever your customers are passionate about — freshwater or saltwater, big or small, beauty or science — help them make their aquarium their own. Make it Marineland. Marineland Rite-Size Cartridge Refills feature Black Diamond Premium Activated Carbon which works twice as fast and keeps working after other carbons quit. These cartridges also come in a variety of sizes to meet any filtration need! Each cartridge is pre-assembled and meets the highest standard of water purification and operational ease. For best results, change cartridge every 2-4 weeks for a crystal clear, healthy aquarium.
