Answer: Probably your best source of information would come from a supplier of hydroponic devices and products. There are formulas for mixing your own liquid fertilizer, to include all 16 required elements for healthy plant growth, and formulas for diluting the solution for delivery to the plants, depending upon the volume of water being applied. Here's a website to get you started: http://www.np.ac.sg/~csk. Search the site for Formulating Nutrient Solutions.
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