AQUATOP AS-04CYL 1 Inch Standard Airstone, 4-pack

Easy to use Air Stones. Simply attach to air pump using airline tubing and place in your desired location within your aquarium. May be buried under gravel. 

FEATURES:

• Increases surface agitation & oxygenation
• Helps release carbon dioxide build-up
• Fits standard airline tubing
• For use in all aquariums
• 4pcs/pack