Ok, so I got a huge shelf for Christmas, and I've got one fixture with two four foot 40w 5000k bulbs, with around 2200 lumens. I've sort of mounted it, more like hung it (it came with chains, so I shortened them to two links, then hung it on the shelf). Now what?
Right now, the plants are about 5 inches from the light. Is this too close? I was planning on adding another fixture on the shelf because of the crud-load of space.
Pic (only two plants up there so far )
(That's a north facing window)