Specifications:
Quantity: 2 sets
Color: Black
Material: Durable and sturdy material, safe for your fish.
Dimensions: 107x19x4mm/4.2x0.74x0.15inch

Features:
Stable in water: 3 suction cups can be attached to the aquarium, maintaining stability in the water during bubbling.
Wide range of applications: Suitable for hydroponic systems, recirculating systems, and ornamental fish tanks. Helps extend the lifespan of nutrient solutions, maintain fish/root health, and promote plant growth.
Easy to use: Soak the air stone in water for approximately 1 hour, then connect it to an air pump and run it. When it becomes clogged, please clean it regularly.

Important note:
All measurements are taken manually, any discrepancies are unintentional. We appreciate your understanding!