I'm a little concerned about the yellow tip, but if it isn't spreading to the new growth, I think she'll be ok. When your HPS comes in, keep it at least 12" away from your sprout, further to start her out....it's going to be a good, but a very big change for her so you won't want to shock her. Keep a fan in the room for circulation and make sure it blows on her as well. It'll blow out the hot, stale air and pump in the nice fresh air. Keep up the good work and Peace!