With Dual Fuel parts one and two as the base and Vitathrive, Rezin, Massive, and Liquid Weight rounding out the rest of the formula, you cannot go wrong. Dual Fuel 1 + 2 Dual Fuel is the simplest and most effective 2-part nutrient system on the market. Used in a 1:1 ratio throughout all grow cycles. It's easy to use for the absolute beginner and yet has been formulated to meet the complex needs of the professional grower. Rezin Rezin is a new product from Green Planet Nutrients that contains a combination of acids created through a complex fermentation process. It's designed to enhance flavor and aromas. Rezin will not affect your PPM. This means that you can run it with any nutrient program at full strength. Massive Massive Bloom Formulation is an all natural bloom booster that utilizes bee waste including honeycomb to amplify a plant's natural growing processes. Massive will supercharge your flowers, making them bigger and denser through our unique blend of naturally derived nutrient components.