Canister Filter Rena Filstar for Freshwater and Saltwater Aquariums - Available Online at petco.com Canister Filter Rena Filstar, Very easy to use and maintain. Quick disconnect, fast cleaning, leak free, self priming. 1. Quick disconnect for fast, easy maintenance. 2. Extra-large, easy-access filter media baskets - Complete with filter foam, micro-filtration pad and Bio-Chem Zorb advanced filtration media, ensures exceptional water quality and fish health. 3. Multi-stage filtration with bypass-free circulation guarantees that all water flows through the filter media and not around it, ensuring a cleaner aquarium. 4. Patented Anti-Airlock System allows self-priming, uninterrupted operation and prevents filter shutdown. 5. Unique Sediment Chamber improves filter efficiency and reduces clogging. 6. Large Rubber Base suppresses vibration and noise, providing quiet operation.