12 Pcs Aquarium Air Stone, 3 in 1 Air Stones Set (Round, Cylinder, Sphere) - Ultra Quiet Oxygen Diffuser for Fish Tank, Hydroponics & Pond - Efficient Bubbles for Aquarium Enthusiasts & Fish Keepers

["3 Shapes for Customized Oxygenation – Includes round 60*15mm (wide bubble curtain), cylinder 25*50mm (vertical flow), and sphere 40mm (decorative micro-bubbles). Perfect for tailoring aeration in aquariums, fish tanks, or hydroponic systems","Ultra-Quiet & Efficient Performance – The sphere 40mm and cylinder 25*50mm stones minimize noise, while the round 60*15mm maximizes oxygen dissolution. Ideal for bedrooms or offices where silence is essential","Versatile Multi-Scene Use – Use the round 60*15mm in ponds, cylinder 25*50mm in deep tanks, and sphere 40mm in nano aquariums. Suitable for freshwater, saltwater, turtle tanks, and hydroponic gardens","Durable & Easy to Install – All stones (round 60*15mm, cylinder 25*50mm, sphere 40mm) feature corrosion-resistant ceramic. No tools needed","Complete Set for Enthusiasts – 4× round 60*15mm, 4× cylinder 25*50mm, 4× sphere 40mm. Designed for aquarium hobbyists seeking reliability and aesthetic flexibility"]