Fluval C Power Filter Ceramic heater core for even and efficient heat distribution Filters 119 gallons per hour. Flow Rate: 120V/60Hz  1,000 L/h (264 US Gal/h) and 230-240V/50Hz 900 L/h (238 US Gal/h) Equipped with cleaning indicator for when the polyfoam needs to be rinsed Clip on filter; Quick and easy maintenance Helps provide a stress-free environment; Works to maintain refreshing crisp water