Hey, thanks for your response...

to answer your questions, im growing in soil -- using fluos for veg and 400 watt HPS during flower. Im growing in pretty big containers too (18 cm diameter during veg and then i transplant to 26 cm pots for flower). got a fan going, temp seems to be ok -- maybe a bit on the warm side when i grow during the summer, i dont have a pH meter though (using tap water that i usually leave out overnight) and i dont have a humidity meter either....
I use veg nutes during the veg cycle and flower nutes during the flower cycle -- maybe like once a week.

does that help?