The key to the GEOTEA commercial brewer is the Extractor-Dome. Air flows in through the top of the stainless steel tubing powered exclusively a Sweetwater High Efficiency pump.
The air exits the lower end of the Extractor-Dome tube. This serves two purposes - firstly to agitate the compost and water enough to cause a cauldron-like action which promotes microbial reproduction; secondly, the air pumped into the water at its specified depth oxygenates the mixture which is essential for microbial reproduction.
The agitation caused by the immense amount of air flowing into the mixture (more than a 55 gallon drum per minute) the microbes out into the water where they will have ample supply of food and oxygen.
This teabag-like process, after its full 24-hour brewing period, produces an astoundingly rich compost tea - full of both beneficial bacteria and fungi.
Please click on the link below for the GeoTea brochure.