a regular incandescent bulb will disrupt the dark period, youve gotten lucky up to this point i guess. Leds are getting better and more cost efficient quite quickly, innovation is a good thing. I think its great they are all trying to upgrade things and make them better and all that, their have been many innovations in the home indoor garden markets that we take for granted today and many more to come in the future. It's ok, dont be afraid of change, embrace it, our growing systems shouldnt be left behind in the past while all our other technologies advance and innovate and get better.