Yaegoo Air Stone 4x2 Large Air Stone Cylinder for Aquarium and Hydroponics Air Pump Air Stone Diffuser Produces Fine Bubbles 4 Pack

Air Stone Cylinder for Aquarium and Hydroponics Air Pump Can produce fine bubbles for oxygen replacement, extend the life of your nutrient solution, keep roots healthy Ideal for hydroponic systems, ponds, aquariums or fish tanks and other systems. Specification: Size: 4" X 2" X 2" Material: Made of high quality and harmless mineral white corundum material Package: 4 piece of Yaegoo air stone Features: Sturdy and durable, have high dissolved oxygen rate. Can delivers lots of small bubbles rather than a limited number of large ones. Produce fine bubbles for oxygen replacement Cylinder design produces more bubbles Accelerate oxygen replenishment Increase water circulation when used with a high-output air pump Great for freshwater, saltwater/reef aquariums and hydroponic use. Instructions: 1 Place air stone in water for 5 minutes before use 2 Connect airline hose to air stone with an air pump 3 Set air stone horizontally in water and use suction cups to hold in place 4 Turn on air pump and enjoy the bubbles 5 Clean air stone surface for increasing its lifespan 6 When not in use clean and store in a dry shaded area.