【Upper material】 It is made of high quality plastic and high quality sand and is fired at high temperature. It is not easy to be blocked, is durable, and can transport oxygen more efficiently. 【Function】Rising air bubbles improve aquarium ventilation and water flow. Can be used for decorative and functional bubbles. 【Long life expectancy】 The material is sturdy and durable, will not pollute water quality, can be reused and cleaned for a long time, and provides continuous good ventilation for your tropical aquarium. 【Excellent performance】 It must be used with an air pump and a trachea. Good performance (excluding air pump and trachea) is an important tool to successfully maintain the respiratory process of water fish. 【Wide scope of application】The package includes 4 pieces and the length is about 20cm and 25cm. It is very suitable for your fish tank or fish tank, and also the best partner for the air pump.
