There has been a sharp drop in humidity inside the grow tent from about 60% on average to about 50% on average. Also, a decrease in temperature, a minimum all the way down to the upper 50's, although that's because it has been below freezing outside several nights. So humidity hasn't been an issue, although it has been cooler than ideal.
The plants grew an average of about 2 inches vertically this past week.
Usually I top plants by the end of week 3 if they have at least 4 nodes, although these seem to be just growing their 4ths. I'm guessing slower growth due to cooler than weather. Still plan on topping them after 4th nodes have grown as long as there's no sign of flowering yet.
Also, I took taller plants ready for harvest out of the grow tent, and lowered the LED light down to only about 28 inches above the plants.
Bumped up light schedule from 18 hours to 20 hours to help keep these warmer during the cooler weather.