No you pull them off throughout the lifecycle of the plant. As soon as you see that light blocking, energy thief pull it. Ok perhaps a few more pointers. Head to the nearest hydro store and get yourself the full line of Advanced Nutrients, the secret here being buy every one of the bottles, all twenty or thirty I believe, you be able to pick them out easily enough, mostly say big bud, bud candy, etc, also a good indicator they work is the price cause they gotta work for that amount, they just gotta. Now that your groom looks just like the store, cool hey. Its ok Dobbs lots of time to learn, no need to panic.