i have 3 girls growing in a height restricted cupboard. its about 5' in height. two of my girls are short and bushy but one is tall and bushy. i woke up yesterday to find that the tallest girl had grown onto the bulb (70w mh i have 4)it has burnt the 2nd leaves 1st being the growing tip. im not to worried about the damage, its not that bad. my problem is though if my plants are in 2nd week of flowering and one is the height of the cupboard, and touching the lights. how can i stunt her growth vertically. please any comments welcome. thanks all.