1. Advantages of Straight Mouth: The round straight mouth shape makes the gas output more smooth, reducing the retention of gas inside the diffuser and ensuring that the gas is stably and continuously refined and then released into the water. 2. Precise Control: With an appropriate air valve, it can precisely control the gas flow and the degree of refinement, meeting the precise needs of different aquatic organisms for the gas environment at different growth stages. 3. Easy to Clean and Maintain: The simple round straight mouth structure has no too many complex parts. When cleaning is required, it can be easily disassembled and cleaned to maintain the good working state of the diffuser.