Name: Anne Summerville, SC (Zone 8a) Only dead fish go with the flow!
I would think it would actually help with seedling growth since what you want at first is robust stems and leaves. I'm definitely going to try it on some of my seeds I'll be starting in a few weeks. I had heard of this before but never in conjunction with seedlings. I might even try the red shift to see if I can get stubborn plants to bloom sooner.
Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so.
Douglas Adams