Photo 1 of UPETTOOLS Aquarium Nano Air Stones Set, 3.2 Inch Fish Tank Bubbler High Dissolved Oxygen Aerator Stone Aquarium Oxygen Diffuser Bubble Release for Fish Tank Aquarium and Hydroponic (No Air Pump)

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Photo 1 of UPETTOOLS Aquarium Nano Air Stones Set, 3.2 Inch Fish Tank Bubbler High Dissolved Oxygen Aerator Stone Aquarium Oxygen Diffuser Bubble Release for Fish Tank Aquarium and Hydroponic (No Air Pump)Photo 2 of UPETTOOLS Aquarium Nano Air Stones Set, 3.2 Inch Fish Tank Bubbler High Dissolved Oxygen Aerator Stone Aquarium Oxygen Diffuser Bubble Release for Fish Tank Aquarium and Hydroponic (No Air Pump)