Maxi 101F – Suitable Tank Size: 55L Maximum Flow Rate: 350L/hr Wattage: 4.2W Operating Voltage: 230V/50Hz Manufacturer’s Guarantee2+1 Years Maxi 102F – Suitable Tank Size: 75L Maximum Flow Rate: 450L/hr Wattage: 8W Operating Voltage: 230V/50Hz Manufacturer’s Guarantee2+1 Years Maxi 103F – Suitable Tank Size: 100L Maximum Flow Rate: 960L/hr Wattage: 15W Operating Voltage: 230V/50Hz Manufacturer’s Guarantee2+1 Years Maxi 104F – Suitable Tank Size: 180L Maximum Flow Rate:1480 L/hr Wattage: 30W Operating Voltage: 230V/50Hz Manufacturer’sGuarantee 2+1 Years. Suitable for: Coldwater, Tropical & Marine.