Produce bubbles: Many fine bubbles are produced in the aquarium. Non-slip: Thanks to the suction cup, the bubble stone sticks firmly to the water tank and is not easy to be removed Applies to: Suitable for families, children desktop aquariums, ponds, aquariums. Excellent for adding oxygen, reducing CO2 and increasing the pH of your hydroponic system. Adding Oxygen: Add oxygen to your hydroponics system, increasing oxygen levels and reducing carbon emissions. Ultra High Dissolved Oxygen It is very useful for adding oxygen to your hydroponics system and increasing oxygen levels, reducing CO2 and increasing pH. This improved vent releases smaller, denser bubbles, causing the oxygen to dissolve twice in the water. Easy to use 2 The air stone is firmly adsorbed on the tank by the suction cup. Durable, ideal for home, office aquariums, aquariums and hydroponic nutrient tanks. The more you submerge the air vent, the more powerful the air pump you need to propel it. Adjustable If you need a