Hi, my friend and I have set up a grow tent ( a 4x4 reflective lining) and we set up the lamp inside to make sure the lightbulb would work, the lightbulb we used was a Metal Hallide 400w bulb, but after about 6 min on, it stopped working, the bulb doesnt look burnt though, oh and the lamp we got also came with a high pressure sodium bulb, so my question is, why does the MH bulb not work anymore? did it get too hot? not enough energy to support the bulb( we are using an extension cord)? or are MH bulbs meant to be used during the budding process? any info will be greatly appreciated!