I can't say I have experience in the matter of using hydro nutes for soil. I use the right tools for the job in the first place, but I don't have friends stopping by with free nutrients, either, lol. :thumbsup:

I'll bet you could contact the manufacturer, and ask them how to use the hydro formula as a soil nutrient.

6.5 ph before adding nuttrients is fine. But the nutrients will drop that number even further, which will likely make it 'out of range'.

You can't accurately use the test kit with runoff. The tinting in the water will skew the results of the color-coded kit.

Avoid Hannah meters, and those soil probe meters. Cheap garbage. My last couple of meters were a Milwaukee, but I dropped my last one a couple of weeks ago. Likely I'll get the same brand when I can afford it though.