Features:- Biochemical filtration, multi-layer internal circulation, large cultivation bin, effectively absorb impurities to establish digestive system.- Efficient increase oxygen, bubble continuously, increase oxygen content in the water, fish more lively.- Imitation natural ecological function, strong power, promote water tanks circulation.- Circulating water quality, strong pumping function, pump the water into the filter box to increase the circulation of water in the cylinder.Specification:Model: XQP-500FPower: 6WWater Lift: 0.9mMax Flow: 500L/HSize: 5.1x5.7x20cmFilter Box: 2pcsWire Length: 1.3mSuitable for tank: