For compost tea the rule of thumb is to have the aerator going at the same litres per minute as your container holds. eg if you have a 20 litre bucket the air volume moving through the the compost tea will be 20 litres per minute running for 24 hours,,,,but over night will sort of do. minimum 6 hours. If you only have a fish aquarium bubbler available to you for example that goes at 10 litres per minute ,,then you have to do only have a bucket load type of thing.
Place the aerator on the bottom,,,"Jordan makeshift arrangement style" with a few rocks or something,,, so the air gets to bubble throughout the whole medium of tea,,,, if you can direct it one way on the bottom of your container to create a vortex all the better.
If you are at Jurasseryie (?spelling) I've been there and its only a little place not more than 1/2 acre so why would you need to make a large compost tea system,,,,a 20 litre bucket with a fish aquarium aerator would be ample for that size area?
maybe your at some other place of bigger acerage to justify a large system I dont know,,,but when it comes to compost tea a little goes a long way,,, you could make 20 litres and scoop a cup full into the mulch at the base of each tree in a little system for innoculation,,,,or dilute your tea into say 5 to 1 and do the whole area at Jurasseryie,,,that would be ample.
Good luck with it,