hey all, my question is pretty simple i think. i was just wondering if i could use a 430w hps bulb in a 400w hps system. reason being im buyin a back up bulb and i found a 430 same price as a 400w bulb but the 430 produces 35,000 more lumens. i'd really like to up the lumens that much but wasnt sure if it was safe or if it would hurt my hps system. thanks again for any input.:rasta: