【Silently dispensed small bubbles】 This aquarium bubble stone can silently produce a very dense cloud of small bubbles. When bubbles burst into the water, the noise is reduced. Many small bubbles are produced in the aquarium and produce a dazzling curtain effect. 【Double oxygen dissolution rate】 Ideal to add oxygen to your hydroponic system. Increase the oxygen content, reduce CO2 and increase the pH. 【Easy to use】 2 Thanks to the suction cup, the air stole is firmly adsorbed on the tank. Durable, ideal for home, office, aquariums, aquariums and hydroponic. 【Adjustable】 If you need a very dense cloud of small bubbles, please adjust the air pump by hand . The air volume of this nano aquarium can be set via the control valve. 【Buy 1 and get 3 free accessories】 This fantastic aquarium stone kit contains a nano disc, a disk d 35 mm air, a control valve and 2 suction cups. Suitable for aquarium of 11-58 Liter and air pump of 1.5 to 3 W. Instruction manual Aquarium Nano Bubble Stone: The