started another plant last week. it is just a BC Big Bud. but i have a problem. it is about 2inches high, it is growing its third set of leaves and has 2 shoots that are 1/4 inch long. the tips of some leaves have turned brown. it cant be burn from lights becouse i am using CFL,s and they are about 2 to 3 inches above the plant. i will get a pic so you can see the damage. should i cut the brown tips off.