Progressive Farms (Progress Earth) Earth Tonic is a biodynamically enhanced sea mineral concentrate containing literally all Earth-bound elements. This results in over 90 elements for your plants to choose from rather than the 17 elements in most hydroponic nutrients. Think of Tonic as biological minerals, like a tool kit for life. The ingredients include Gulf Stream ocean water, Himalayan crystal salt, colloidal clay, nettle's tea, and the biodynamic preparations BD500-508. The ingredients are prepared and potentized in proprietary ways. The result of this alchemical summit is over 90 naturally occurring elements, humic acids, naturally occurring vitamins, and primary metabolic compounds unique to the properties of the specific plants and herbs contained within. By providing these tools to plants and the microbes that help them, we are harnessing the full potential of life by increasing the nutrient density of our food and catalyzing the nutrient cycling capabilities of microbes.