General Hydroponics pH Down Liquid is an easy to use solution designed to lower the pH of nutrient solutions. This liquid is ideal for use with all hydroponic, aeroponic, and soil-less growing mediums. By adjusting the pH of the nutrient solution, you can ensure your plants are getting the desired amount of nutrients, resulting in maximum growth potential. GH pH Down Liquid is easy to use and can help create an ideal environment for your plants to thrive. The pH Down Liquid is designed to be used with all hydroponic, aeroponic, and soil-less gardening systems. It is formulated to be used with any type of nutrient solution, including General Hydroponics nutrient solutions. It helps to maintain the pH at the ideal level for maximum nutrient absorption. By having the proper pH level, your plants will be able to absorb more of the available nutrients, resulting in a more vigorous growth.