Fox Farm 16oz or 32oz pH Up, pH Down & Test Kit Combo Kit Includes 16oz pH Up, 16oz pH Down and Litmus Paper pH Test Indicator or Kit Includes 32oz pH Up, 32oz pH Down and Litmus Paper pH Test Indicator Cultivation Nation pH UP raises the pH of nutrient solutions. An ideal pH range for growing plants is 5.6 – 6.8. Shake well before use. Take a pH reading of the nutrient solution. Based on your pH reading, adjust the pH by adding small amounts of pH UP at a time, testing for pH again after each application. Continue until the desired pH is reached. Cultivation Nation pH DOWN lowers the pH of nutrient solutions. An ideal pH range for growing plants is 5.6 – 6.8. Shake well before use. Take a pH reading of the nutrient solution. Based on your pH reading, adjust the pH by adding small amounts of pH DOWN at a time, testing for pH again after each application. Continue until the desired pH is reached. Limus Paper pH Test Indicator (Wide Spectrum) Measures 3-14 pH. The Hydroponic pH test kit is good for 100 tests. At the rate of 3 tests per week it will last one year, making it excellent value for money. This kit covers a pH range of 3-14 measuring in 0.1 increments.
