Clones too young for HID????????

I order a a 600W HPS from HTG last week and it is supposed to get here on monday. My clones turned 2 weeks old on wednesday and are starting to get bushy. I was wondering when should i put them under the HID? and how high should it be above them? advice please........

I envy your clones as I'm having trouble with mine.last time I had10 for 10 and now I get one to survive.If they are getting bushy then under the hid they go.Proximity to light depends on fans on canopy.Gradually bring them under the lites.They need a littletime to get used to new theinviroment.I have gotten my plants as close as 12" from 1000hps.HTH Showgirl