my PH wont change from 7

[BurnOne]

Oddly enough....

Robert Clarke(cannabis botany) says 6.5 to 7.5 is the best ph for cannabis in soil...

Despite the attempts at fear mongering 7 is fine....

That's correct. For soil using salt or chemical fertilizer, pH 6.2 - 6.7 is ideal. But not for organic growing. The humates in organic soil will buffer pH so the organic nutes can be taken up by the plants at varying pH.
Burn1

 

[vonforne]

There is another thing to consider when adding your lime to your mix, is that most containers are not what they seem. In that I mean that if the container is one gallon it is smaller than that, like .74 gallon. I started to adjust the amounts according to the container numbers on the bottom and cross referencing it with the NSI(Nursery Supplies Inc.) numbers from their web site.

 

[Guest]

I used chemical tests and 2 different types of electronic testers all had same conclision PH of 7

 

[Guest]

Ive actually considered using a scale, to me that would be a true measurement.