I have one 400W MH light in a 2 foot wide by 8 foot long and about 9 feet high closet with double sliding doors. They are still vegging, six are 6 weeks old and three are 3 weeks old. Temps are always high 80's or even more in the low 90's. Is that wayy too hot just for a week until i get it settled? Also, what could i do do ventilate it better to drop it down to the desired degrees.