What's you soil ph?

The thing about using drops is that once the nute solution is mixed into the water, the color of the nutrient is going interfere with the color of the ph sample once the dropped is mixed in....

Adjust plain water ph before adding nutes, add to soil, then check the soil ph. Sometimes you have to offset water ph to correct soil ph to get the soil ph in the proper nutrient range....

Hope this helps....

CGI::::::