i am interested in starting large volume compost tea ( 50 gal. instead of 5
as always shown)
has anyone done this and have info ?
Same quantities as 5 gal. batch and just brew longer and other info !

You must have asked this question in a couple of places.

You probably can convert the recipe to the larger volume. Are you aerating it and will you use it relatively soon? If you're making a lot to keep it over time to use versus making new more often, that might effect the quality of the tea.