Jef79answered grow question 5 years ago Hello.. Hope you are well.. If u can pull more air out of grow room this will help.. If not applicable then use de-humidifing packs from ur local superstore(they usually very cheap) they are used for humid rooms in caravans, bathrooms etc.. I use 2 in my grow every time shes flowering just to b safe and u can actually see the moisture they pull out ur room.. For a couple of £/$€ if wud highly recommend for a fail safe method.. Stay safe n gud luck with ur garden.. 👍🍀