Cannabis soil NPK value?
Hey, I bought the "420 Blaze it Soil," and now the problem is, the NPK value is always listed in three numbers (e.g., 6-3-8), but with the soil, it's now given in mg/L. Is there any way to calculate that? If necessary, it's a 70L bag, and the values are as follows. Nitrogen (N): 270mg/L…