badflash yea I was wondering because it looked like that one you are using. I know they
cost more than a air pump yet they are top of the line for high volume of bubbles in water.

I want to get one some day for a compost tea brewing , already made my own brewer and
like the filter design we came up with (nobody has one like it). However my goal is too be
able to extract microbes from the compost with air aggitation without have the microbes
have to go through a impeller pump. And air is better that way