Features: 1.Practical and durable home using product. Increase oxygen levels, lower CO2 and raise PH. 2.It is an important instrument to successfully keep fish for respiration process. 3.Creates bubbles in fish tank while attached to an air pumps(air pumps NOT included). 4.Creates water current and dazzling underwater scenes. 5.Perfect accessories for better life. Help to keep fish healthy and adds extra beauty to the aquarium. Specifications: Type: Aquarium Bubble Air Stone Color: Blue Size: 60x77mm Package includes: 1 x Air Bubble Stone Notice: Due to the different monitor and light effect, the actual color maybe a slight different from the picture color. Please allow 5-30mm differs due to manual measurement.
