4 Pack Air Stone, 1.5 Inch Air Stone Disc, Aerator Bubble Diffuser, Air Pump Accessories For Hydroponics, Aquarium Fish Tank

Features: Widely applicable: Suitable for hydroponic systems ponds aquarium fish tanks helping extend the life of your nutrient solution Air Stone Dimension: 1.5 D x 0.6 H Fits for 3/ 16 inch standard airline tubing Quality and safe materials: Made of safe and washable material Disk-shaped design makes it easily be hidden in your aquarium or other fish tank bubble decorations (Note: Soak them at least for 2 hours before use) Dimension: Air Stone Dimension: 1.5 D x 0.6 H Package includes: 4 PCS air stones 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