Mineral Airstones Bubble 4 Inch Ball Shape Diffuser Air Stone for Aquarium Fish Tank, Pump and Hydroponics(2 Pack) - size: 4inch，2PCS

About this item

• HIGH QUALITY MATERIAL: This air stones made of high quality non-toxic mineral material, which has no effect on the growth fish and hydroponics, but also promotes it. Round surface flat bottom make stone place steady. Low oxygen consumption & fusion rate.
• ADVANTAGE: An ideal way to add oxygen and lower CO₂ levels to your hydroponic, circulation system, fish tank and aquarium，efficient and stable work
• MULTIFUNCTION: great way to properly aerate a home aquarium. Aquarium air stone creates lot of tiny oxygen bubbles that bring vitality fish and hydroponic plants, enhance vital system aeration & water movement, versatile air stone for decorative functional
• PRODUCT PARAMETER: Fits for 3/16" / 4 mm inner diameter tube. Measures 4" in Diameter by 2.5" Height. Jetting Volume: 20 L/min, Recommended Air Pump Power: >4 W
• NOTE: Soaking the airstone in water for 3 hours before use. Brush the stone surface every 2 weeks, you will find that he can accompany you for a long time and save a lot of money