Mountain Tree Air Diffusors Mountain Tree Air Diffusors are perfect to increase the dissolved oxygen for your pond. Mountain Tree Air Diffusors are a smooth industrial design to eliminate sharp edges, ensure it is no damage to fish. 304 stainless steel base plastic air nozzle, not easy to get rusted. Its weight makes it will not float and easy to use with a large flow air pump. Read more Features: 304 Stainless Steel base and plastic nozzle Heavy weight to make sure it sinks on the bottom Rounded edge design to ensure the safety of fishes Environmental friendly rubber Made of imported eco-friendly rubber from Japan The rubber ring is made of eco-friendly rubber imported from Japan, which has a longer lifetime than regular product. Irregular pores on rubber Thanks to the irregular pores on rubber, the water contains more dissolved oxygen and fishes are happier and more lively! Available in 50cm and 30cm
