General description This AlwaysH Aquarium Air Stone is designed to produce a dense cloud of small bubbles silently, enhancing the aesthetic appeal of your aquarium while improving oxygen levels. It is ideal for both aquariums and hydroponic systems, effectively increasing oxygen content, reducing CO2, and raising pH levels. Technical specifications Size: 35mm Produces a dense cloud of small bubbles Adjustable air volume via control valve Installation Firmly attaches to the tank using suction cups Usage Ideal for home, office, aquariums, and hydroponics Adjust the air pump manually for desired bubble density