humidity question

what is a good relative humidity % ?????????
for grow room

If you are watering right then you will not need to worry about the humidity.During the veg stage of the grow i mist the plants once a week and i will continue to mist up to the 2nd week of flowering.But then after that try to keep any moisture of the plants apart from watering the roots.When misting i like to add a little superthrive to about a litre of water with no other nutrients in this will cause nutrient burns.I water once a week but when i do water i wet the plants through and has the plants dry the moisture will be took up into the air of the grow room.If your plants look ok then i would not do anything that you are not allready doing.50% is about the right range to aim for but it can be a little higher during veg if you think the grow room is dry then place a small tub of water in the room but be careful not to knock it over.

up to70% veg no more than 50% flowering and the lower i think the more thc you get