After 10 days of the starter light when do i change to big light??

AND I HAVE BEEN LEAVING MY STARTER LIGHT ON 24HOURS A DAY FOR NOW 11DAYS STRIGHT...I HAVE A 400WATT LIGHT BUTT DO I PUT IT IN ,,IN 2WEEEKS AND LEAVE IT 18ON 60FF...MY STARTER LIGHT IS6000 SOMETHING I 4GOT BUT ITS THR RIGHT ONE...HELP ME

Ya can put them under the 400 any time.