wut he said iz rite. keep it 18/6 AT LEAST untill flowerin iz juss startin 2 begin. i usually wait till a lil after, dependin on how the plant iz commin. if u want to extend buddin, leave it 18/6 fer a lil longer, but dont overdo it. id wait to decide untill u see how it duz, cuz u may wanna give it more light 2 grow it longer.
PeAcE