Haha ye i got 8ft to work with so ill be cool just was wondering how large they would get but if i made them 2.5feet in veg i would have to lift my lights up for when they got big also i would more lights i think hahah i am using a t5 right now 4ft 4 bulb so if i made them like 6 feet heheh no no that to tall but i would make them at lest 4.5 feet i would have to get more lights for the bottom because i dont think the t5 cant reach that far down ....we will see what happens.