I thought i would post up a quick question here. I have roots organic soil in my scrog box, approx 3 gal, and recently my growth has stopped. A little discoloration, but i believe that was nute burn early on. Anyway i thought I would check the runoff ph, as the last batch of plants i grew in roots all had deficiency issues while their coco (roots as well) sisters were superb.
So here is where my batch seems different. My water goes in 6.5 (usually 6.0, this time I upped) and came out at 7.5-7.7! So even low 7s is pushing lockout for different minerals but 7.5 is a joke. Has anyone else had problems with ro soil being this alkaline?
I am flushing with 5.6 right now to see if i can work out a bit of that buildup.
Ideas?