light, light, light, if light is geting to the bottem of your plant then your good , but i dont hesitate one second to grab the clippers durring flowering , the plants light needs decrease at an increasing rate and the need for the flower pedel to get the light this perduces nice big buds , sorround your plant in mylar or go down to home depo or wallmart , and pick up some florecent bulb mounts and put tubes that are made for groing ( not the floresent bulbs that usaliy go in them ) and put thease on the side of your plant to ad light , do not put them lower then half of the size of your plant tho , if you place them to low you will confuse your plant and stun it