Why is the pH level important at all?
So first things first, why is pH important for a cannabis plant?
In short, each living organism is influenced by the pH around them, especially the pH of water. For plants, the main impact of pH levels is the ability to absorb the nutrient it needs within the soil.
For example, Nitrogen is only available to plants when the pH is over 5.4.
If the pH is below that, you can put as much Nitrogen as you want in the water, it will just accumulate within the soil. Remember, too many nutrients isn’t a good thing.
We will go into each nutrients pH level in the next section, but the range to keep in mind is a pH from 6 to 7.
The optimal pH range for cannabis to absorb all nutrients is between 6.3 and 6.5.
You can fine tune this with time, but if you’re starting out, just aim for the middle and it’ll be fine.