Sweetwater Oxygen Diffusers are the same high quality as the Sweetwater Air Diffusers. The difference is in the smaller pore size, which produces finer bubbles. Sweetwater fine-pore diffusers do require higher pressure (about 5″ H2O more) and more frequent cleaning than our regular pore diffusers, so they are not typically recommended for regular aeration. The bubble uniformity is excellent.
The Sweetwater Oxygen Diffusers are for oxygen gas only and are not for use with standard aeration.