General Hydropnics pH Test Indicator 8 fl oz

Maintain the ideal pH level for your plants (5.5 - 6.5) with the General Hydroponics pH Test Indicator. Simply add a few drops of the highly concentrated pH Test Indicator to your nutrient solution and compare the resulting color to the included chart. Based on the results, you can easily adjust your solution by adding pH Up or pH Down (sold separately) as needed.

This versatile indicator works across a wide pH range (4.0 - 8.5), giving you accurate and reliable readings every time. Easy, dependable pH testing for healthier plants and better results.