I am in the middle of my first grow and have a closet divided up and have two rooms. The lower room is two feet tall for my clones and have two 21" grow lights as well as an outdoor flourecent light. The upper portion has one 400 watt HPS light for the one plant that is in there so far. There is a fan blowing between the light and the plant and out the door. The question I am having is about the humidity level. The clones are watered everyday but are BONE dry at the end of the day and by the end of the day the humidity is down to 30% and the temp is between 90 and 95f. What are some cheap and easy ways to boost the humidity to hopefully keep water on the plants a little longer.