Never tried purple widow but it sounds tasty. A mix of ak-47 and a purple strain right? Its goin to look n smell excellent but don't trash ur bag seeds. U can get potent bud from them if they are sensimillia. i use cfls for veggie and 400 watt hps for budding. Try experimenting on a plant n bring it indoors in a box or cupboard for a week wit at least one cfl an inch away from the tip n compare to the outdoor ones. u'll be surprised at the difference. i move some of my plants to outdoors to finish flowering but indoors for veggie. luck