Deep Blue Professional High Performance Air Stone Twin PK - 1" Cylinder (2.5 x 1.5CM)
Highly porous long lasting air diffuser provides even aeration.
Recommend rinsing diffuser under running tap water monthly to ensure maximum aeration and performance.
Durable air stone diffuses water in every direction.
Assists in the release of carbon dioxide build-up.
Accelerates oxygen replenishment.