Marineland Penguin PRO 275 Power Filter. Marineland Penguin PRO Power Filter delivers easy, three-stage mechanical, chemical and biological aquarium filtration. This ultra-quiet filter has a decoupled motor to reduce noise so you can relax and enjoy your aquarium. This power filter contains BIO-Wheel technology to provide wet/dry biological filtration for nitrifying bacteria growth and eliminating toxic ammonia and nitrate fast. Premium Cartridge Premium activated carbon Ribbed back for maximum water contact and clarity Quiet! Less than 40 dB Decoupled motor and lid's tight design reduce noise Customizable Extra media container Adjustable flow control up to 275 GPH Powerful Filters a 50-gallon aquarium five times per hour Impeller and motor assembly designed for efficient power Wet/Dry Biological Filtration Eliminates toxic ammonia fast! Improved design to ensure constant spinning Sleek Design Designed to fit standard hoods and canopies Sits 2.83" above aquarium, 3.09" behind aquarium, and is 9.5" wide Compatible with Rite-Size C Filter Cartridges Size: For up to 50 Gallons