Starting seeds/rooting clones under a 600w

What's up, I'm new here but have read the site for days gathering knowledge.
I got a couple outdoor grows under my belt but no indoor.

So, I was wondering if you can start seeds and root new clones under a 600 or 400w MH ? Or do I need a separate Fluoro set up ?

I was thinking I could just kept the 600w really high off the plants and just lower it gradually every so often.

You can start them under the 600 watt metal halide with no probelms. Just after you plant them go ahead and turn the lights on before they sprout and they will adjust to the light themselves. Doing it after they sprout and you could kill them. With clones you would have to adjust the lighting to them so you wouldn't burn them.

You can keep the MH light as close as you want, the problem is the actual heat coming from it. If you can put your hand by the top of the plant and the temps aren't too bad then the plant will be OK, if you burn your hand it will burn the plant also.

Thanks bro, good info.