The P-Line AP2502 Areator Pump is a high-quality pump designed for efficient aeration. With its 2-speed functionality, you can adjust the pump to suit your specific needs. The pump is designed to be durable and reliable, ensuring long-lasting performance. The size of the pump is 1/D 2.5×4, making it suitable for various applications. Whether you need to aerate a pond, aquarium, or other water feature, the P-Line AP2502 Areator Pump is a great choice.