Can i use my ppm/ph stick to measure the ppm/ph of an organic liquid fert, the same way i would with hydro. Or is there more to it?
and if i want to check the ph and ppm of the soil, i would have to run a solution of known ph and ppm through the soil, collect the run off and sample it with my ppm/ph stick right?

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Don't wait for things to be right in order to begin. Change is messy. Things will never be just right. Follow Teddy Roosevelt's timeless advice, "Do what you can, with what you have, where you are."

It's the same as you would with hydro. Your just mixing your nutes with water, and adjusting to the proper EC/ppm. Adjust the PH after mixing the nutes, and you know exactly what you feeding the plants.
When you sample the solution after running through the soil, your possibly getting a different ppm, since the plants are up taking some of the different nutes.

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thanks george

__________________
Don't wait for things to be right in order to begin. Change is messy. Things will never be just right. Follow Teddy Roosevelt's timeless advice, "Do what you can, with what you have, where you are."