no you can have 1000w on your seedling just not to close is all but to be honest with ya i keep mine under flourecent lights untill they are about 6 inches or so with about 3-4 sets of well established leaves then i transplant them into pots and put under 1000w mh but i keep them a fair distance away not to burn them or shock them. good luck i hope this helps and if you have any questions ill try to get back to ya asap