Durable material - aquarium air stone is made of strong and durable silicon carbide and stainless steel and can be cleaned repeatedly over a long period of time. Exquisite stone-shaped design: the round surface and flat bottom make the stone stable, matte, delicate and smooth. Ultra High Dissolved Oxygen - the air volume is large and the air outlet is uniform. It is an ideal way to add oxygen to your hydroponic, circulation, pond, aquarium and aquarium system and reduce CO2 levels. Easy to use - Suitable for 4mm or 8mm air hose. Simply attach the air hose to the air intake and place it where you want it. Keeps fish healthy and active - air stone has been burnt at high temperatures and good air permeability. The non-toxic material keeps the fish healthy and active. Features: Super strong and durable. Weighs enough to sink into the ground without suction cups. Dissolve more oxygen in the water. Create small, calm, smooth, dense bubbles in the water. Strong filtration for fresh and salt
