thanks for the reply lordsoth666. i already have a fan in there 24/7. and a negative ion fan in the room where the closet is, along with ionizer (O3 ozone) in the room AND in the closet. thanks for letting me know about letting the temp get to 91ish.

the top leaves seem to get a bit of a darker color to it. is that because of the heat from the 400W HPS light? the light is 20 inches away from the top of the plant. should i suspend a piece of glass between the light and the plant to allow the light to hit the plant but reduce the the amount of heat that actually reaches the plant. i'm thinking the glass can deflect some of the head on heat.