The deficiency in the leaf tips seems to have stopped or at least slowed down, don't notice much more spreading of it.
My second plant is starting to catch up in bud growth now which is cool.
I've got my humidity pretty stable now at proper levels with a humidity controller and my Air conditioner (which has a dehumidify setting)
Hey ukTuk Just as a heads up you already know about 6.5 Ph basically being the neutral for cannabis growing! I also have hard water that comes out my tap. So I invested in a ph meter and regulate my water everytime I fill the jug up. Maintaining Ph is important because by it being faulty it also occasionly opens the door up to other fungus/pestilence or god knows what. Definetly want to be seeing a happy gardener @ harvest! Keep up the good work & enjoy your grow!