Thanks for all the info, and I appreciate where you're coming from, but I have reasons for using the above, and as I said, each has it's purpose.
Starting off, I've used Hempy mix for the past 4 years and I really love the DTW as opposed to a circulating rez as there's never any need to control PPM or rez temps or worry about spreading disease etc. The reason I started to add some organics was because I wanted the medium to have some ability to retain nutrients because I've found that switching between feeding nutes and then straight H2o greatly reduces the chance of nute burn, and a side benefit is less $$ down the drain. It still retains most of the benefits of classic Hempy, still fairly quick response to nute changes and flushes much quicker than straight soil, it really works quite well actually.
As for the other stuff, here's my rational:
1) Silica - AKA silicon, used in building framework for cells, known to build stronger branches/stalks, helps to balance the uptake of several other nutrients, helps plants immune systems (fighting pathogens and fungal infections), aids in recovery from stress and more.
2) Kelp extract & fulvic acid - Kelp is a great source of micronutrients, enzymes, amino acids and hormones. While I've used it as a part of my feeding regimen over the years, recently my research shows that foliar application of kelp extract and fulvic acid boosts clone viability as well as helping mother plants bounce back post-surgery.
3) GH's Subcultures M&B - Beneficial bacteria and mycorrhizae are well documented in helping nutrient uptake as well as helping plants resist pathogens. My favorite is B. subtilis (found in GH Subculture B) which form rough biofilms (dense communities) that are beneficial for the control of plant pathogens, and I have used this to combat leaf blight with great success.
4) Molasses - Largely used to feed the bennies, it's also a source of carbohydrates and trace minerals.
5) BAP - AKA 6-Benzylaminopurine, this hormone promotes branching, increases flowering and aids in resistance to disease, drought, cold and high salt levels. This is only applied two or three times at specific stages of plant growth.