ULTRA HIGH OXYGEN oxygen - This oxygen stone will create much more delicate and rich tiny bubbles and absorb carbon dioxide, perfectly increase oxygen levels, reduce CO2 and increase pH. A perfect way toadd oxygen and circulate food in your aquarium. PREMIUM MATERIAL- Special ceramic material adopted by sintering at 1350C in the furnace, which is more sturdy than other products in the market for long-term use. WASHABLE AND REUSABLE- If the dirt is clogged or the bubble is reduced, you can remove the air stone disc and wash it. For long life and best results, we recommend cleaning once a month. VERY QUIET - The high-quality aerator stone has a strong and porous structure and is very quiet thanks to its high air permeability. AIR PUMP ACCESSORIES- 1 x air stone disc, 1 x suction cup, 1 x converter, 1 x 2m oxygen hose. Perfect for your aquarium and it's the best partner for the air pump. Air stone disc for aquarium This air bubble diffuser is an ultra-fine pore bubble stone that emits a cloud of ultra-fine crispy" bubbles that increase the surface area of dissolved oxygen in the water.