see i have 4 mothers (2x mazar an 2x C-99) they are about 3 months old an about foot an half tall..im using only one of my T5 right now(2ft 4 bulbs) 24 hours lighting..i did have them under a 400 watt mh but i didnt want to keep running them under that 24 hours. now i made me a clonning machine...