Unique Bargains Mineral Bubble Air Stone Diffuser for Aquarium Pond Pump 1.6" x 3.15" Black

Color: Black,Gray; Total Size: 135 mm / 5.3"; Material: Mineral, Plastic; Model: NAJ-301 Stone Size: 40 x 80 mm / 1.6" x 3.15" (D*H); Fits for 0.16"/4mm inner diameter tube Increases oxygen and lowers CO2 levels. An important accessory to keep aquatic fish for process Create an abundant small to tiny bubbles rather than a limited number of larger bubbles Suitable for aquarium, fish tank, pond hydroponic and circulation system