The Interpet Internal Cartridge Filter is the ultimate in compact filters for your Aquarium. Using an effective four stage filtration, the filter pumps the dirty water through the four layers to produce clear and healthy water. Stage One. The water passes through bio media which acts as a home for essential bacteria which removes toxic fish waste. Stage Two. Mechanical floss then clears the water by trapping fine waste Stage Three. The water then passes through carbon which purifies the water by removing dyes, toxins, heave metals and odours. Stage Four. The final stage has a unique Algaway pad that reduces unsightly algae by removing phosphate, algaes favorite food. The result is crystal clear and healthy water being filtered back into your aquarium Don't forget to change your cartridge and Algaway pad to keep your aquarium clear and healthy. Service packs are available to purchase Specifications CF1 Max Flow Rate: 320 LPH (70 GPH) Power: 3.3 Watts Aquarium size 36-68 Litres (8-15 Gallons). A range of unique 'hang on' easy access filters to suitaquariums from 36-90litres , The CF Filtration system representsthe most versatile, EFFORTLESS CARE, SPARKLING RESULTS - This filter boasts superior filtration with bio-degradable coir tech and easy monthly cartridge changes 5 STAGE FILTRATION FOR CRYSTAL CLEAR WATER - This powerhouse filter utilizes a 5-stage filtration system to keep your water sparkling clean and healthy EASY TO FIT - Simply fix the sucker mounted support cradle onto the back or side of your aquarium and slide the filter into place using the locator hook EFFORTLESS MAINTENANCE - Designed for effortless maintenance and crafted with sustainable materials, the Bio-CF Filter is the ultimate choice for effective and environmentally conscious aquarium care COLDWATER & TROPICAL – For coldwater and tropical aquariums up to 68 litres (15 gallons), assembled dimensions (HxWxD) cm: 14.4 x 10.5 x 8.4