Is there any particular reason Arjan uses pH around 5.5-5.9. I always heard 6.8, but they seem to grow very fine herb

heres one of the plants they've grown, but they have many others that are at these slightly acidic pH
YouTube - Green House Seed Co El Ni�±o Grow with Italian Subtitles
Exodus_herbman Reviewed by Exodus_herbman on . Greenhouse seed's pH Is there any particular reason Arjan uses pH around 5.5-5.9. I always heard 6.8, but they seem to grow very fine herb heres one of the plants they've grown, but they have many others that are at these slightly acidic pH YouTube - Green House Seed Co El Ni�±o Grow with Italian Subtitles Rating: 5