I tried to keep humidity over 65%, using glass of water in the grow and wet towel. With this method the humidity are almost around 70% but whent the fan for the recirculation are working i had some low peaks of humidity value, The fan helps me also to reduce temperature during the night phase.
Greetings from Russia! Your plants look great! Keep developing in the same spirit! If you are interested in following the adventures of weed in Russia, subscribe to my diaries