Any hydroponic nutrients that contain carbon in their structural makeup are referred to as organic. Usually, these nutrients add organic matter contributing to the health of the soil and enhancing water-holding and cat-ion exchange capacities. Once they are introduced into the soil, they stimulate microbial activity that enhances the structure of the soil. They are a great and valuable source of macronutrients to the soil. Our collection of organic nutrients includes Gaia Green Worm Casting, BioCanna Bio Vega, Advanced Nutrients Big bud Organic Liquid, and Gaia Green Gypsum, among others.