I use the BioCanna line in OFFF soil, with crappy tap water; the GH tester says its 7.0. So my question is this... Do I have to worrt about ppm using soil, or should I just keep my water PH'd to around 6.3-6.8? And why are all my stems turning purple, its making me sad.
Weedologist Reviewed by Weedologist on . If you use RO or distilled water you NEED CalMag Plus That's all. My fingers were cramping from typing it n times a day. Rating: 5