you dont add lumens up to reach a total lumen output but rather you have the listed lumen for each lamp in more areas
damonw Reviewed by damonw on . multiple hps lights or one i scored some 50 watt hps (250 output) so far i have 4 set up mixed with some cfls. with this setup i am able to get the lights pretty close and can put them anywhere for max effect. what are the draw backs of this technique? Rating: 5