pH up solution is a chemical product used to increase the pH level of water or soil in gardening and hydroponic systems. It is typically made of potassium hydroxide (KOH), which is a strong alkaline compound that can neutralize acidic conditions. pH up solution is an essential tool for gardeners who need to adjust the pH levels of their water or soil to optimize plant growth and development. It is easy to use, and a little goes a long way. pH up solution can help improve nutrient absorption, prevent nutrient deficiencies, and promote healthy root development.