50X50 mm, Medium, Cylindrical, Air Stone, Blister Package

Designed to add oxygen and circulate nutrition to your hydroponic growing system
Extend the life of your nutrient solution, keep roots healthy
Produce fine bubbles for oxygen replacement
Size: 2" X 2" X 2"; Fits for 4mm inner diameter tube
Fit for hydroponic systems, ponds, aquariums or fish tanks and other systems