Air Stone Cylinder Features:
1. Size: 4" Long x 2" Diameter, fit for 0.16"/4mm inner diameter tube, run with ≥5W air pump, 2.5 L/min (40 GPH) flow rate per air stone.
2. Designed to accelerate oxygen replenishment and increase water circulation when used with a high-output air pump.
3. Produce fine bubbles to maximize oxygen replacement and lower CO2 levels.
4. Extend the life of your nutrient solution, help keep fish / roots healthy, and promote plant growth.
5. Suitable for hydroponic growing systems, ponds, aquariums (freshwater/ saltwater/ reef), fish tanks and other systems.