To produce sustainable hydroponic fertilizer good consistent water quality is required. Water should be free from pesticide, microbial contamination. Concentration of harmful elements like sodium , chloride and boron should be avoided. The pH of the water should be between 5.0-7.0 and EC should be below 0.5 mmhos/cm. Better to modified from recommended solutions like Hoagland (1939), Steiner (1961), Bollard (1966), Jenson and Malter (1995). You may use these nutrient solutions as a good guidelines. The common nutrient ranges are: Nitrogen (nitrate or ammonium) 100-250 ppm elemental N, P ( dihydrogen phosphate/ mono-hydrogen phosphate/phosphate) 30-50 ppm as elemental P, K (potassium) 100-300 ppm, Calcium  80-140 ppm., Mg 30-70 ppm, S 50-120 ppm  as elemental S, Fe ( ferrus/ferric ions) 1-5ppm, Copper 0.04-0.2ppm, Manganese 0.5-1.0ppm, Zn 0.3-0.6ppm, Boron (boric acid/borate) 0.2-0.5 ppm elemental B, cloride should be

Thank you for your input, Dr. Tarafdar. I am aware of everything you have stated, but I am wondering if you have anything to add on the topic I have defined, which is processing organic matter to derive inorganic fertilizers or inoculating systems with beneficial microorganisms so that you can create a nutrient buffer. I hypothesize that complete water soluble fertilizers can be derived from organic matter and meet the criteria required for use in hydroponic systems. The methods and possibilities are what I am hoping to explore.

Among the beneficial microorganisms you may inoculate Azospirillum ( may be Azospirillum brasilense) , a root associative N-fixers, a P solubilizing bacteria may be Bacillus megatorium or Bacillus polymax or Bacillus subtilis. If you have already plant into the system then you may try for mycorrhizal spores like Glomus mosseae and if desire you may also try for growth promoting hormones like NAA.

ٍSometimes workers face problems in solution preparations they think that they have to start with distiled or deionized water. They do not have to, they have to measure the concentration of each elements and then raise them to the required level, after cultivation periodical leaf mineral contents should be determined or depend on  visual to detect mineral deficiencies and correct them 

Dear Joseph In relation to your statement "As we know, plants do not utilize organic compounds in the root zones for nutrition, and insects and microorganisms must break these compounds down to usable inorganic plant nutrients." While this appears generally true that nutritionally simple substances is soluble mineral form are passed into and utilized by plants it is not necessarily specifically true. Humic substances which can pass into the plants and do signal a lot of beneficial plant processes such as plant resistance reactions and plant hormonal responses they can produce plant growth regulator responses which exceed a simple mineral approach.. For complete nutrition of hydroponics it is very important to provide soluble Silicon which gives the cellular skeleton strength and reduces issues with insects and pathogens. In addition Kelp and humic materials act as plant regulators and will improve plant metabolism from stimulating photosynthesis to improving respiration and allowing better mineral absorption and utilization. The inclusion of kelp fulvic and humic acid at 50 ppm and the use of 2 ppm soluble Silicon can be combined with a complete soluble fertilizer and improved results can be possible. As the previous commentator stress plant tissue analysis will be important to help achieve best nutritional balance in your mixture. Compost teas can be another means for achieving the plant nutrition which are sustainable and might reduce issues with pathogens that can prolierate in nonbiologically based system. 

For the latest recipes for mineral fertilizers as used in the hydroponics industry, you could look for the Manual published on the web: Nutrient solutions for Greenhouse Crops.

It is published on:

www.akzonobel.com/micronutrients and some other websites

Dr. Hepperly, thank you for beginning to address my question! I am curious to learn more about organic compounds that are taken up by the root to serve purposes other than nutrition. I would like to see validation that including these compounds in an inorganic soluble fertilizer solution improves plant growth and development. 

I am also still wondering about what any of you know regarding fertilizers derived from organic waste (food and plant matter) but formatted for use in hydroponic systems.

Thank you all very much for your time and contributions.

Joseph Look up soluble kelp based products, soluble fulvic acid and soluble humic acid. These materials serve as chelators and have growth regulating properties. The cannibis growers have been particularly experimenting with these materials in combination with soluble fertilizer solutions. 

I have looked them up before, and I found some claims to that effect. Firstly, are you suggesting these simple compounds may hold the key to further optimizing controlled cultivation systems? And secondly, have you come across any good publications that demonstrate their efficacy in hydroponic crop production? Thank you again.

Aqueous ammonia (NH3+H2O) is a liquid fertilizer which may be used in customized fertilizers for hydroponics. It is low pressure ammonia solution which contains both gaseous ammonia and ammonium hydroxide. But due to limited safety hazards, handling of this fertilizer is little difficult.

Thank you all for your efforts. I will continue searching for relevant information to my particular quandary. 

What the best definition or explanation for term( nutrient dynamics) in hydroponics or aquaponics ???

I think, nutrient dynamics in hydroponics or aquaponics means the maintenance of near-equilibrium concentrations of Ca, K, Mg, N, P, suitable concentration of Mn and Cu, and acceptable accumulation rates of Na and Zn.

Hi, Joseph R. Chidiac I am trying to find the answer to the problem that you asked for. Basically, is there any sustainable, eco-friendly way to prepare fertilizers and other necessities, for the hydroponic system? Let me know if you have found a solution to the problem.