WAVEREEF External Hybrid protein skimmer is specially designed to fit the seafood aquarium and fish breeding industry. It is a box shaped with skimming and sterilization system inside. The user just need connect a feeding pump(6000-12000L/h) with this skimmer, then it will works. With a 20W high efficiency UV sterilizer inside, which can helps kill the bacteria from the water and bring the clear and healthy water for your seafood and fish breeding condition. It can be used in 3-10 tons water filtration. All aspects of skimmer are designed to surpass many chanllenges other skimmers on the market miss out.