Description
Creates bubbles in fish tank while attached to an air pump(air pump is not included). Color: Gray Material: Mineral Stone + Plastic Item Size: Approx. 40mm * 16mm/1.57*0.63″ (D * H) Package List:4pcs *air stone disk Before use, please immerse it in the water for 15 minutes. It it doesn’t have bubbles in one part, please change the pump of higher power. Increase oxygen levels, lower CO2 and raise PH. It is an important instrument to successfully keep aquatic fish for respiration process. It produ
