400w halogen

Hi i i have a 150w and 400w halogen spotlight and im wondering if i could use one of them to put on some clones 24/0 in a humidity dome?

sure, i guess. I'd use a few little cfls or a flouro tube though, incandesents just put out heat and suck up energy, they are not worth the electricity they use. how many clones are we talking about?