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I have not found any source of organic nutrients for hydroponics, except a fish tank on site.

Hydrogardens in Colorado Springs has about the best sources of organic hydroponic nutrients I've found at a semi-reasonable price. Their primary fertilizer listings are non-organic, but they do a good job of discussing proper use of the organics. Unless you feel compelled to use only the organic nutrients, I would look at some of their other fertilizers as well. I've been very satisfied with the quality of their formulations, and consistency of the products. If you market your produce, you can then market it as naturally grown, or some such labeling to indicate that you don't use pesticides (if that is the case). In my estimation, consumers readily accept this kind of labeling vs. organic labeling. The quality of the produce, both nutritionally and structurally is what matters to most consumers, in my opinion. Whether or not it was grown with purely certified nutrients does not seem to be as important a consideration for many.

Renais

Aquaponics.