Diesel Auto

It appears that all three plants bounced back from the transplant fairly well. The diesel plant has small brown spots on a few leaves. Everything I looked at says its a calcium deficiency or the PH is too low. I'm going to start watering with a 6.5 ph water for a few cycles to see if that clears up the issue. The other two plants have no spots on them but I am keeping a close watch. Also I'm water in low amounts basically until the soil around the base dries. I started LST training, which I hope I am doing correctly, and they have already started to respond and there is a noticeable bend back towards the light on all three. I've also added a small fan to create a subtle breeze for the stalks to grow stronger as well. I'm still tinkering with the room setup due to the humidity already being high. I welcome any tips and suggestions