Rock Star A & B is the newest release from Rock Nutrients. Formulated with readily available plant nutrients, Rock Star maximizes the bioavailability of essential macronutrients. The new technology in Rock Star A & B allows the user one set of nutrients for all phases of grow and bloom. This high-strength, simple-to-use base nutrient system provides a low salt index, which further increases absorption efficiency. For superior results, use with the full Rock program. Use equal parts of Rock Star A to Rock Star B. Use at a rate of 8-16 mls per gallon. Compatible in all mediums.