Letgro, this is right up my alley. I have been benny hunting for years now lol.
The main ingredient in that tea is Aquashield...which is what they now call Hydroguard. You do not need to brew it in a tea, you can add it to your nutrient mixture....the dose is 2ml per gallon. Having said that, the part about "awakening the bennies" in the recipe is something I do, just not with all the organic material (not even molasses anymore). I find awakening them helps with when I res change small plants with small root systems. I brew my Hydroguard (only for a res change, I just add it straight from bottle for maintenance top ups) with a sweetener (Sugaree at the moment) which is made for hydroponics. I used to brew organic teas for my soil grows...that recipe is deffo going to create some serious benny activity, I am down for you trying it! I like the small dosage....I do not think it will slime things up. There are other benny products out there...especially for teas. I use Earthjuice BioRighteous for brewing teas in my organic grows.
The ZHO is mycorrhizae fungus. Earthjuice Rooters Mycorrhizae is the stuff I use. I used to mix the fungus and bennies in my organic teas together for a while, but I did some research and apparently they compete against each other. Plus, the mycorrhizae is better for soil. Having said that, I sprinkle some on the roots when I put my clones into net pots with hydroton clay balls. I do not think you need this in your tea but up to you.
The Flying Skull you are using is not a benny (beneficial bacteria). It is a enzyme product. It is pretty similar to the one I use...Hygrozyme. The enzymes break down organic matter (like dead root material) into food the bennies can use. Perfect!
Pick a benny product (Hydroguard) and an Enzyme (Flying Skull), and find a carbohydrate that will not slime your res, and you will be good to go. Try experimenting wit the tea recipe and see what happens....that is how I started learning about bennies etc.
Something I have never tried is running a sterile res. Product like Hydrogen Peroxide (H2O2), UC Roots, Res Clear etc, kill all living life in your res. So definitely do not use any of these in your res if you are running bennies!
You roots are not that bad, by the way. Hydroguard would clear that up in less than a week. Let me now what you decide to do, I am hella interested, deffo a hot topic for me!