Green Planet - Hydro Fuel Grow is the grow component of the Hydro Fuel 4-part base nutrient system, designed to allow for more control and intricacy in your feeding regimen during the vegetative stage of growth. The Hydro Fuel base nutrient system provides a necessary differentiation between the grow and bloom cycles, with 2 parts for the vegetative stage and 2 parts for the flowering stage. Hydro Fuel Grow is part of the Hydro Fuel Feed Program