We utilize our experience and expertise on all our products to provide the best in the industry All our products feature premium components and are backed by the best team in the industry All products are engineered, assembled and tested in the USA We are trusted by millions of people for specialized products to meet their needs where they live, work and play Features- When used in combination with the AquaOxy Air Pump ItemNo 51549, sold separately this diffuser produces finely dispersed air that optimizes gas exchange- Air injection capacity of up to 42 GPM- For use in ponds up to 5,000 gallonsSpecifications- Application Hitch- Category Type 1- Weight 68 lbs SKU: NRNTL575