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
I received the wrong item and when I called to find out how to return it I was answered by the most rude person I have ever dealt with. I will NEVER get anything from this "Marineland" company again. I use 6 of these filters every couple of weeks, that is a pretty good sale they have lost on top of the other aquarium items I would have purchased.
