well the plant decided to be a bush for what ever reason, it maybe genetics or the fem seeds it could be a number of reasons, the 150 cfl on top and good light training, depends. more details how long in are these, weeks? If they are getting burnt from a alittle bit of nutes they may not be ready for flower, but u can force anyway and it will work good, u may have a delay in flower if u burnt them or they werent ready to flower, but i mean its not gonna be that much of a stunt, they will take off very soon just watch, my big buds looked skinny and well just not a whole lot of plant matter, but in the matter of 3 days the leaves bulked up.