I use an AC infinity humidifier which helps kick in the RH when needed. I’m currently using a 2x2 tent but want to find a non-function and free glass door fridge / wine cooler to tinker with and try to make up a DIY cannatrol.
Right now if i miss the mark I lift the RH% with terracotta pucks soaked in boiling water. I could just toss a fan leaf in there as well but the pucks are pathogen free.