As Anthony said, "rubbish in, rubbish out", is paramount for the compost. For soil rehab, "typically", you need very fungally dominant tea. Typically. However, as Dr. Ingham stresses time and again, you MUST test first to assess baseline soil conditions. Without it you're only guessing.
Worm casting tea isn't going to be terribly fungal. Best to produce GOOD compost tailored for fungal production, then take enough out for a couple, or more tea batches and mix in good fungal foods, I like oats, and add humic acid. Then let it have a few days to get "fuzzy" with mycelia, then brew.
Ensure your brewer doesn't have sharp corners which will become stagnant, and NEVER use an air stone, as they will contaminate and are uncleanable. The surface disturbance is what oxygenates the brew, requiring sufficient air and large bubbles. Dr. Ingham suggested a MINIMUM of about 2 - 3 cfm for a 200 hal brew. I'm concerned that would be in an IDEAL vessel. As I'm not wealthy I use an Ecoair 7 air pump (about $100 @ Amazon), 3566 gal/hr (7.95 cfm) @ 6.96psi which is 22.9 ft-water, works great in 55 gal plastic drum batch. I plan to add another when scaling up to a tote.
Large populations of beneficials with few detrimentals can not be over stressed. Apply your tea, then Carbonaceous mulch, and / or spray the mulch. Your goal is inoculation and ensuring available food. And protection from sun and wind, etc.
Good luck, if I can help, or you need testing, DM me.
