Respectfully disagree.
I run no-till and get my soil tested and re-tested.
Started out in 2016 with soil pH of 6 or slightly less.
2019 got soil tested again - same soil only thing grown in it was cannabis and no amendments. Used soil tested @ 7.0pH Which is optimal and why the plants themselves along with the microbes changed the soil pH to where they want it. Thats apparently 7.0pH.
Not trying to be a dick here. You can believe what you will. Plants roots via root exudate along with microbes in the soil CONSTANTY change the soil pH. There's no set pH that the plant wants to see.
Its just science.
If you wanna beat up your plants roots and the micro-organisms go ahead and use pH up/down. You should feel better that you are helping.
BTW I water with RO water and it tests to 6.5pH (not that I test it but I have several times over the years).
Maybe you are talking more about soil acidity/alkalinity instead of pH?? These 2 tests are only reliable done in a lab under lab conditions. Why I get a test done and suggest folks that wanna grow in soil get soil tested.
See the label there where the blue line goes up to the optimum line that = 7 pH - I didn't make that up thats my state extension service telling me that. All the state university extension services will tell you the same thing. They are actual soil scientists working in a soil lab. Food for thought.
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Here you can see the original soil test - same soil, only thing done with the soil is grow weed in it over and over organically no-till no fertilizers and no pH adjustments.
I would draw a conclusion that cannabis may not care that much about soil pH as long as its within say 6pH - 7pH with a little play either way.
2016 test - you can see the pH below optimum at 6.2pH
I actually would like it lower like this so that the rock dusts in the soil will break down better with a slightly acidic soil pH. Take note of the ACIDITY test results on each soil test and compare.
As a side note, every successive grow got better and plants got bigger. Which = higher yields.
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