Pre-Charge is a complete mix of major, secondary, micronutrients and rare minerals designed to supplement soilless substrates (artificial growing mediums). Soilless mediums such as Peat moss, Compost and Coconut coir are generally inert in nature. Pre-Charge provides nutrients and supplements which are required to induce a mineral-based charge (EC) in the medium. Seedlings will respond to the right EC as if they are growing in real soil. It offers a full array of nutrient and supplements which can last in the substrate for full growing season.