Brewing a 5 gallon batch of compost tea is no trouble. In a couple of weeks I will kick it up a notch and be brewing up 500 gallons at a time.
We purchased a 500 gallon spray rig from Rozell Sprayer Manufacturing Co. in Tyler, TX this Spring. 
In order to add beneficial microbes to our hay fields and pasture, I’m going to replace the water soluble fertilizer with compost tea. I don’t have enough compost to spread over 100+ acres, so compost tea is the solution.
I just ordered my aquascape 4-stone pond aerator today, and this is what I will use to aerate my tea to ensure it stays aerobic. Most of the beneficial bacteria are aerobic and will need plenty of O2. 
To keep the ratio of finished compost to water the same as a 5 gallon brew (1 lb. -1.5 lbs. per 5 gallon) I am going to need 100 -150 lbs. of compost and some larger mesh bags. I am planning on using onion sacks for my tea bags.
Stay tuned for more information on TexasRedWorms.com “Big Time- 500 gallon Worm Compost Tea Party”
Texas Jumpers 
when you make a batch of tea do you use it with out diluting it.
How well did this work? I have a guy here in Oklahoma that wants to try worm tea on his hay. He has a 300 gal sprayer