AQUANEAT Air Stone, 4 X 2 Inch Large Air Stone Cylinder, Aerator Bubble Diffuser, Air Pump Accessories for Hydroponic Growing System, Pond Circulation, Aquarium Fish Tank (10 Pack)

Features:
Widely applicable: Suitable for hydroponic systems, ponds, aquarium fish tanks, helping extend the life of your nutrient solution, keep fish/ roots healthy and promote plant growth
Fits for 3/ 16 inch standard airline tubing
Quality and safe materials: Made of safe and washable material(Soak them for at least 2 hours before use)
Recommended a high-output air pump at least 8W-10W or a commercial air pump
Dimension:
2 "D x 4" H
Note: Soak them for at least 2 hours before use and clean regularly by a brush as they get clogged after weeks or months of usage