Root Catalog > Default Category > Air • Water • CO2 > Air Stones / Diffusers
 | Oxygen Shield Air Diffusers -- 5 (5 Gallon Bucket) *DISCONTINUED*Oxygen Shields are made out a recycled rubber polymer and are designed for years of operation with minimal maintenance. Each Oxygen Shield diffuses air at around 3000 microns or 3 millimeters in diameter. Oxygen Shields come in 5 different sizes and fit...Only $16.99 |