If it is veg stage, 65% in the tent is ok, but IMO I wouldn't let it get higher... at 65%, what is the temp? Again, there are hyper links within the link I sent... it is good reading... growing indoors is different than outdoors and environmental conditions play a factor in plant health, which in turn plays a role in your yields... link on humidity... http://www.growweedeasy.com/humidity.... it is something to bookmark and read through when time permits as it gives the basics. Some strains can do well with high temps and humidity, others can't, but no matter what, indoors during flower humidity and circulation play a big role in keeping the buds safe from mold and rot.well the highest humidity that i have checked was 75% into the tent and into the room 70%(usually the humidity into the tent is 65%). These readings are not extremely high. What do you think?Do i have to use more fans?