RAD650W Self Weighted Rubber Membrane Air Diffuser – 6" – 1/2" npt

• These EPDM rubber air diffusers are incredibly strong and are ideal for pond aeration, circulation and destratisfying applications
• Self weighted design the RAD650W will sink to the pond bottom
• Unlike air stones these diffusers are easy to clean
• In testing they produce a slightly larger air bubble than air stones which translates into less oxygen transfer into the water, so for fish holding tanks, raceways, fish production ponds, etc. we recommend air stones
• An excellent choice for pond and water garden aeration since they actually produce more circulation and water movement