Ready-to-use filter cartridges for Penguin Power Filters. Pre-assembled cartridges are packed with Black Diamond Pure Activated Carbon--works twice as fast and keeps working long after other carbons quit. Double-thick polyfiber pad. Makes aquarium water sparkle. Traps more dirt. Removes more impurities. Delivers maximum water to carbon contact. Better than a bag. No messy assembly required. Changes in seconds. Just shake and rinse. For best results, change every two to four weeks.
User Comments about the Marineland Penguin Rite-Size Ready-To-Use Filter Cartridges
Very good value and the filters arrived quickly. The fish are happy too.
