Don't know but you have my attention!

I can't help with your project, but my own wacky idea for organic nutes is to scrape up some of the hundred year old dried cow manure and hay remains in my grandpa's barn, put them in a tied off sock, and just throw them into my DWC lettuce bed. It would make a highly aerated manure tea, which cultures the beneficial bacteria that are responsible for nutrient uptake. With enough good bacteria, plants can do well with minimal nutrients. The tiny bit of nitrogen in the manure should be enough to grow lettuce.

Cole Robbie my son has a 2 and a half acre small farmlet, and he does what you suggest, that is putting the manure in a 44 gallon drum in a hessian sack and letting it do its work when it is really ripe and pungent on his soil vegetable garden , boy does it work wonders, if you can stand the smell it will work very well. As for the DWC system who knows , but in the past when I play around with organic formulas in my hydroponic systems it has had been devastating. However both yourself and Pupilla Charites seem to understand the chemical reactions better that 99 per cent of all of the hydroponic growers I have come across. If it works spread the good news.

Thanks both for the encouragement. I get what Cole is saying, but this organic stuff is really a can of worms for me and I wonder if it might be easier to do it by trial and error. It seems to me if Aquaponics can work there is no reason we should be restricted to inorganic only ingredients.

IMO it is just like it was in the 1930s when everyone was running around trying to quantify the different nutrient strengths that worked in the inorganic forms that were available. Denwa51 went 30-50% organic with some encouraging results and the conditions weren't even optimal. It sounds to me like select amino acids derived from waste plant proteins might not only work, but also complement nitrate, just like ammonium does which is used as 5-10% of N.
The way I'm looking at it, it would be nice to have a few rules of thumb and someone out there knows this already but may not be telling! It seems too big of a project to do without a better lab, unless I can figure out how to hydrolyze cleanly to 100% and be sure about it.

Thanks Robert for slipping another encouraging message in there. It is really hard and for me saying I understood what was going on with the organic system would be wishful thinking. I'm just hoping to get a few of the basics down like acceptable organic nitrogen to replace a part of the high performance mineral blends, but the idea would be to do it without the stink in the reservoir. If the stink need be in a separate reactor reservoir, so be it. I don't object to the smell, could care less, but I don't want the decomposition happening in the same place to such a degree, hey they've got biofilters in aquaponics and I'm more excited about green manure (I live in Florida and it's a never ending cleanup of it).

Where my interest may differ from the composting tea and poopy stuff, which I don't know much about, is that nobody's told me so far we can't get high performance organic stuff in a form that can be readily added and assimilated as a substitute for part of these expensive salts instead of depending upon a whole ecosystem that never gives the same result. Sheesh, it aggravates me no end to see all the green mass being contiually removed as waste, stripping the same good nutrients that would make great lettuce and basil but getting nothing back except a bill from the municipality's waste disposal people-- by the truckload in my neighborhood alone every week.