I also think, in my experience, living in an area where the daylength swings so drastically during the year, from 3 hours a day to 21 hours a day, that cloning is darn near impossible in the winter months, when the sun's energy is so little. This affects life indoors, as well as outdoors. Some kind of ambient energy, I think.
Indoors you can control temps, so energy has to play a factor.
all them weird happenings in the world,, ambient energy included, are voodoo,, learned that in deepest darndest mexico,, yep,, voodoo,, two 'o's, important