It's actually day......lights off from 10am to 10pm. It's the nature of being up this far north and up in elevation, there's such a time delay of frozen ground. It stays cold in the basement all through summer. Here it is almost the middle of June and we've put the heat on a little the last few nights. Even in August, when you walk down the stairs to the basement you can feel the cold hit you.If you are getting down to 62 degrees at night sustained the whole dark period, well shit you know.
I know it's a little unorthodox to have it this cool, it might keep the stretching down a bit, but they're doing fine.