I don't know if you have read through this site or not, but
http://microbeorganics.com/ was a good source for me when I brewed my first couple teas. I haven't used one in a long time only because I don't have a space near my plants that I can do it, but followed his general approaches on how i did mine. I never diluted my teas, main reasoning for not diluting was to minimize the risk of disturbing the microbes that had populated the tea. I used the tea the same as I would when watering the plants and only noticed happier looking plants as a result.
I saw your plants in another thread though and they look awesome, so whatever you are doing is working well in my opinion. What lights are you running if you don't mind me asking?
Best of luck with everything and stay well though.