Sell Carborundum Bubble Air Stone 2.5cm /pc best price

5MM Inlet Size : 2.5cm Features - 100% brand new and high quality - Strong and durable, good air diffusion, good filterability - Excellent workmanship, good aeration effect Widely used in 1. Sewage treatment plant for aeration and agitation, to prevent deposition of large particles of sediments and remove part of organic matters 2. Fish ponds (aquaculture plants) increase oxygen for eutrophic water body in environment and biological culture 3. Increase oxygen for live fish and seafood transport 4. Aquarium (purifiers) purification and filtration; water quality ozone sterilization and oxygen increasing 5. Other processes need to diffuse air