genuinegirly, my main resource for gardening/composting/etc questions is my university's extension service. They turned up plans for a larger compost tea brewer using a 25-gallon garbage can:
http://extension.oregonstate.edu/lan...erplans_2_.pdf The plans also include a recipe and links to other resources on compost tea, including a link back to Elaine Ingham's site.
For the extension's main page, go here:
Oregon State University Extension Service Lots of other information on various gardening topics--it's very handy, though of course it's tailored more to the climate of the PacNW.