Pairwugui Aquarium Air Stones, 47.2in Long Deformable Rubber Fish Tank Bubbler, Air Bubble Wall Curtain Air Stones for Aquariums, High Dissolved Oxygen Diffuser Decorations for Saltwater Fresh WaterBrand: Pairwugui Color: Black Features: [Air Stones for Aquariums] This fish tank bubbler stone can produce bubbles with evenly rising air holes and stay suspended longer, which better increases dissolved oxygen levels in the water, enhances the vitality of aquatic organisms, provides a healthier environment. It is suitable for aquariums, fish tanks, hydroponic systems, ponds, etc. [Safe Rubber Material] The tube body of this upgraded aquarium bubbler