Athosanswered grow question 5 years ago I would not bother with a humidifier, low humidity in veg is not an issue, at most it will take a few more days to develop as desired. I veg with RH between 30% to 40%. Even more, high humidity lowers carbon filters life. Finally, in flower you will struggle lowering your humidity, if you are going to buy something, look into dehumidifiers.