yeah, a couple flourescentz would work. make sure ya dont put em too close to the plantz tho cuz it will burn the leaves. rotate the lights a couple times a day and as they get bigger u might wanna rotate them more making sure the entire plant gets equal lighting as the light frum a few flour. is nowhere near as strong as the suns. you also want to think about insulating your closet a bit. if there small id put em in a fair sized box and have it foiled and sealed up wit the lights inside there. i cood go on fer hourz so i'll let sum other ppl make suggestionz. hope i helped.
PeAcE