4-in-1 MACHINE: The Aquarium filter features algae removal, wave creation, filtration and water circulation. It has a flow rate of 660 GPH and 24V pump for 125-400 gallon tanks. 24V DV Pump: The new 24V DC water pump for aquarium filters can effectively protect your pets and reduce the risk of short-circuit, meet the outdoor pond use. POWERFUL ALGAE KILLING EFFECTIVENESS - The aquarium filter uses UV light to kill algae and spacer to filter out contaminants. get your aquarium crystal clear in 3-7 days. NEW DESIGN: The filter is filtered by a spacer, which can effectively take out fish poop, impurities and other particles, and has a higher filtration level than traditional filters. LARGE SIZE FILTER- 14.5 in* 3 in* 3.5 in Suitable for Koi, Cichlid, Turtle and Coral aquariums, reduces frequent water changes and improves water clarity for better viewing. 660GPH Aquarium Filter, UV Sterilizer for Aquarium for 125-400 Gallon, 24V DC Powerful Pump for Large Fish Koi Pond Cold Plunge Filter, Green Killing Machine with Algae Remover for Fish Tank