Quote Originally Posted by BlueDragonSmoke
can you put a hps bulb in a mh fixture?
Nope.

Just use the two lights you have now. Using both combined will give you better results than using either one alone. I wouldn't spend the cash on a conversion when you have all the light you need already.
smoknjoe Reviewed by smoknjoe on . Question. about a light I am using a 400 mh to veg there a foot tall now and I want to start to bud but I cant afford a 400 hps right now but I got a hell of a deal on a 150 hps fixture, bulb and all 30$.......at a yard sale...lol my Q is ....if I put my 400 mh on 12/12 with the 150 hps on 12/12 , will that be enough to bud and have somthing in the end? growing in a 3x3x6 closet, 4 plants , mylar every where..soil, 5 gallon buckets.....who can help ?:( Rating: 5