Aquarium Air Stone, Air Diffuser for Aquarium, Stone Air Aquarium Air Supply Oxygen to Fish in the Aquarium (50mm, Air Pump and Air Hose Not Included)

Ultra-high dissolution: This nano bubble stone improves oxygen dissolution and reduces carbon dioxide, promoting better breathing for your fish. Its very high dissolution air bubbles are smaller, denser and more uniform. Ultra-quiet: The operating noise in the water is very low, it does not affect the normal activities of aquatic organisms and does not disturb children's sleep. Adjustable: You can change the size of the bubbles by hand and let the bubble stone return into the water when all accessories are connected, which can quickly achieve a refining effect. Easy to Use The ultra-quiet nano bubble stone for aquarium can stay in the aquarium without moving, soak in the aquarium for two hours before using the best nano-silent bubble stone for aquarium. Product specification: 50mm nano bubble stone *1 (Other accessories not included), suitable for 20-30CM aquarium, the bubble stone is placed under the aquarium.