mh ballast, does hps bulb fit?

alright i get it now thanks

what is your opinion on running a grow with an mh the whole way thru? i read places that the bud has a possibility of having a stronger high but you wont get the fat juicy nuggs you would with a hps.. this is my first grow so i dont experience

a mh does put out more uv lighting, thc and all that is made to protect the plant from uv rays, so in theory yes they should have a slightly higher thc content. I'd just add a uv light myself.

ya i have a 250w mh that i bought a conversion bulb for...the hps conversion bulb is actually 30w less then the hallide, so i have a 220w hps conversion bulb...works great.