When you need to lower the pH in your nutrient solution, Hades Down is what you need! Hades Down will stabilize the nutrient solution using chelation. Providing ready to absorb natural molecules, Hades Down is able to stimulate microorganisms and plant growth! Not only will plant health improve but microbes, photosynthesis, and co2 production will increase! Feeding Schedule Early Vegetative: 6.0-6.2 Mid Vegetative: 6.0-6.2 Late Vegetative: 6.0-6.2 Early Flowering: 6.2-6.8 Mid Flowering: 6.2-6.8 Late Fruiting: 6.2-6.8 Flush: 6.4