pH in hydroponics nutrient solution is an important parameter. In any hydroponics system pH should be between 5.5 to 6.5 because these determine the availability of nutrient for plants. Controlling pH is an important activity. There are two kind of pH control to be used for hydroponics. If pH of solution increases then pH down be used and if pH goes down then pH up should be used. Tripathi Products Private Limited brings you good quality hydroponics pH adjuster at an affordable price.