AQUANEAT Air Stone Disc, 4 Packs, Aerator Bubble Diffuser, Air Pump Accessories for Hydroponics, Aquarium Fish Tank, Ponds, DWC Reservoirs and Circulation System (3 inch)

Widely applicable: Suitable for hydroponic systems, ponds, aquarium fish tanks, helping extend the life of your nutrient solution Medium Bubbles: The air stone disc can produce dense bubbles,increasing oxygen content in your fish tank;Disk-shaped design makes it easily be hidden in your aquarium Fits for 3/ 16 inch standard airline tubing;Recommended air pump power: >4W Quality and safe materials: Made of safe and washable material,keep your fish and plants healthy Note: soak the stone completely in water for 2 hours before use; clean it with a brush after a period time of use