CES pH Up is a highly concentrated pH adjustment liquid that raises water and nutrient solution pH. It is designed for use with plants and is developed with Cutting Edge Solutions nutrients. It is highly concentrated for rapid adjustment, and should be used conservatively by slowly adding it to pure water or nutrient solution at small intervals, noting the beginning reading and testing pH until the desired pH is achieved. The amount required for adjustment will vary depending on the strength of the nutrient mixture and purity of the water source used. It may be diluted when applied to the reservoir with nutrients and does not contain any artificial dyes.