Nutrients for plants can be broken down in to two main groups, macro and micronutrients. Macro nutrients are nutrients that are needed in large amounts for the everyday functions of a plant. These can be called the building blocks of the plant. You may have heard of Nitrogen (N), Phosphorus (P) and Potassium (K). These are all macronutrients that the plants need to survive. RE-250 is a great addition to your soil as it can help to unlock and distribute these nutrients to the plant's root systems. Micronutrients are just as important, but plants only need small amounts. Some of the common ones are Iron (Fe), Manganese (Mn) and Copper (Cu). Biotic booster has been shown to increase the availability of these nutrients in the root zone to aid the uptake by your plants.