Tabanzhe 4 PCS Fish Tank Oxygen Stone Disc,Aquarium Air Stone Ball Bubble Diffuser,4 cm Bubble Release Tool Hydroponics Pond Accessories for Air Pumps Fish Tanks Buckets

Reliable Material: This air stone is made of non-toxic mineral material sintered at high temperature. Suitable for aeration in DWC systems. Keep fish or rhizomes growing healthily. Stable in Water: The disc size is 4 × 1.5 cm / 1.6*0.6 inches. Its round and flat shape allows it to sink smoothly to the bottom and lie steadily in the tank. Oxygen supply:The catch tube at the top of the air stone is connected to the oxygen pump. The small and dense bubbles produced by the air stone can provide sufficient oxygen for the fish. Widely used: These air stones can be used in fish tanks, ponds, aquariums, freshwater, saltwater aquariums, hydroponic or aquaculture farms, etc. Tip: It is recommended to soak the air stone discs in water for more than 24 hours or smooth the surface of the bubble discs with sandpaper before use.