Germinating seeds in general:
Quote Originally Posted by Rusty Trichome
...Peat is also on the acidic side and most seed starting mixes have a soil pH around 5.8, which is fine for starting most seeds.
For cannabis seeds:
Quote Originally Posted by Rusty Trichome
I'd raise the ph to between 6.5 and 6.8 for soil. 6.0 is wayyyy too low. :thumbsup:
This applies to runoff ph also.