Humidity is way over emphasized in growing weed . TBS ...keep it between 75% and 45% and you'll be fine. Heat and air circulation will control your humidity, but you must control them at reasonably levels. Heat, equals open stomatas, equals high humidity. It's the plants natural way of cooling down. To much heat, and if the up take of water is not sufficient, the plants stomato will close.. NOW you have BIG PROBLEMS ! Open stomatos also uptake CO2, that's why it's important to minimize the heat. while increasing air circulation. When you find the "sweet spot," you'll know it ! Happy growin