You might want to do a little more looking into the whole "organics" thing. It doesn't quite just come down to the labeling on a bottle or bag of a product. Try to understand what being
organic has to do with nature and soil and what soil is all about. Then it is easier to try and refine or replicate the organics paradigm indoors to supply our soils\soil-less mix with with is needed to assist the biota and the plant.
Many people misunderstand organics and think it is all about carbon. Carbon is important, sure, but the other part of the definition has to do with being
from the organism or
derived from living matter which organically grown plants absolutely are. Soil is alive. Plants in nature are deriving most of their nutrition from microbes (bacteria, archaea, fungi, protozoa, nematodes) which exist or roam about the rhizosphere; feeding plants by carrying out their normal functions or working in other ways directly or indirectly for the plant.
Nobody really even realized the complexity of it all and certainly not since before the introduction of the electron microscope have we been able to see what actually goes on in soil. But, it worked before anybody ever really understood all the details, and it can work for you. Luckily we do know some of the details now, and if you're able to learn some of them you'll have better luck with it, and in determining which products are acceptable or even necessary.
http://soils.usda.gov/sqi/concepts/soil_biology/soil_food_web.html