HYDRO BOOST is designed to swell your flowers the second and fourth week of the flowering stage, which promotes heavier and more dense flowers and fruits. It is also the most cost-effective product of its type in the industry - for you and the end user! Product should not be used with Massive Bloom Stimulator. - Due to the nature of this product, it’s very important not to use more than the suggested amounts. - The first and original product of its type. - Designed to make monstrous blooms. - Formulated to speed up the flowering cycle.