Yeah, 2 of mine were laying great before I even got the light! They were getting maybe 12 hours a day. They are my BSL and EE. Suprise that my SLW isn't laying, they're supposed to be good winter layers.
I said AM not PM. It is completely dark here at 5:15 PM. I turn the light on at 4 AM until it lights up outside (7 AM). It's bright enough so you can see everything in the house and read, but then I do have good eyesight.