Use to raise the pH of nutrient solutions. A pH of 5.5-6.5 is recommended for proper nutrient uptake in most plant varieties. Botanicare's pH Up solution is formulated at a 29% concentration rate making it easy to use for beginners and easy to customize for advanced growers. Botanicare’s pH Up is a 29% concentrated Potassium Hydroxide solution that has an extremely low level of phytotoxicity and does not contain salts or chlorides. Increases pH of nutrient solutions Dye free. Carbonate free. Highly concentrated. MSDS