auto purple kush coco 4x4 dtw

hi guys im really at a loss for words on whats going on with my auto purple kush. i have 10 years of soiless growing in promix peat and perilte type medium and this is my first dtw coco grow and these plants have out grown my 4x4x8 tent and are massive. i was told they would be maybe 75cm or 28...