Feature: 1. [Compact And Transparent] Mini aquarium bubble diffuser, exquisite and small, does not take up the space of the fish tank. Transparent body can be integrated with water plants. 2. [Removable] This fish tank bubble diffuser is easy to disassemble and convenient to clean. Can be used with oxygenation pump (not included) to create a healthy environment for your fish. 3. [Suction Cup Fixing] The aquarium air stone diffuser is fixed with 2 strong suction cups for stable installation, you can place it safely in the corner of the planted aquarium. 4. [Increase Dissolved Oxygen] Fish tank oxygen refiner can produce very dense small bubbles to add oxygen to your plants. Increases oxygen levels and reduces carbon dioxide. 5. [Adjustable] This aquarium air refiner comes with an control valve that helps you adjust the level of refinement. Suitable for most freshwater and saltwater environments. Specification: Item Type: Aquarium Bubble Diffuser Kit Material: Acrylic Product Assembly Size: Height: Approx. 7cm/2.8in, Length (Not Include Suction Cup): Approx. 5.5cm/2.2in. Package List: 1 x Aquarium Bubble Diffuser2 x Suction Cup1 x Control Valve Note: 1. The product is used for fish tank oxygenation.2. Before use, please soak the refiner disc in water for about 2 hours for better effect, this refiner is not the bigger the power the better. In the case of pushing, the smaller the adjustment, the more delicate, such as water depth of more than 40cm/15.7in appropriate to increase the number of air pump W.3. Long term use, such as dirt clogging, bubble reduction, can be taken out to clean repeated use.4. In the case of a complete connection of all the accessories of the air pump, many times unplug the air tube below the fine tuning valve, so that the refiner in the water can quickly achieve the effect of refinement.5. Manual measurement, please allow some errors.