Air stone sturdy & durable with great aeration effect excellent filtration performance widely used in: 1 sewage treatment plant for aeration & agitation to prevent deposition of large particles of sediments & remove part of organic matters. 2 fish ponds (aquaculture plants) increase oxygen for eutrophic water body in environment & biological culture. 3 increase oxygen for live fish & seafood transport. 4 aquarium (purifiers) purification & filtration; water quality ozone sterilization & oxygen increasing. 5 other processes need to diffuse air. Instruction: 1 Connect air tube (not included) with air stone connect the other end of air tube with air pump (not included ) 2 Soak the item in water for 15 minutes before usage. 3 As for long-term use if it occurs blocking dirt or bubbles decreasing condition please take it out for repeated cleaning. Name: cylinder shape air stone diffuser Model: AS004-1
Material: superhard silicon carbide emery is sintered under high temperature
Colour: blue
Size: diameter 20 x 50 mm overall length 63 mm 6 x Air stone In blister package