Whether growing hydroponically or in soil you will need to introduce your plants to nutrients and/or supplements. Base nutrient schedules may use one nutrient or might require the mixing of multiple nutrients to create the prefect N-P-K balance. There are two stages for your nutrients. Growing nutrients will be high in Nitrogen with smaller amounts of Phosphorus and Potassium. Blooming nutrients are high in Phosphorus and low in Potassium and Nitrogen. Supplements are additives to your normal base nutrients. They will help you accomplish the exact yield or color you want.