i dont think so, its gonna blow the light right away, but be carefull... the 250 w ballast has the power to turn om a 250 HPS bulb, if you put a smaller, its gonna be overpowerd... dont do it, unless you talk with a pro electric dude..
marimbas Reviewed by marimbas on . can i use 150w bulb on 250w ballast?? is it possible to use a 150w hps bulb (or any bulb) on a 250w hps ballast, with out any risk? Rating: 5