I’m never really overly concerned on the humidity levels. At first I was, but then I started to not really care, until I’m in flower mode and need to keep it below a certain percentage. In veg, the plants usually put off their own humidity, the bigger they get, the higher it is. You can also help the humidity by hanging wet clothes in the tent but it’s a pain in the ass to stay on top of keeping them wet. My BLT watering technique also helps to raise the humidity levels as well. More water you run through, the higher the humidity in the tent will be