Quote Originally Posted by Bruce Schultz
So with bulbs on 5-inch centers, you'd have 3 bulbs across and 5 bulbs down? Would you position the sockets so the top of the bulbs are pointed down, or situate them horizontally?

Actually, my 10x15" box will have a 2x3 bulb array on 5" centers.

I am currently planning on a base up (spiral down) - that's what everyone seems to use. But when I look at the bulb, there is clearly more light-emitting area on the side than on the top of the bulp, and it does seem to me that a configuration with horizontal bulbs might be more efficient. Actually, I started a thread on that subject a couple of weeks ago, but either no one understood the question, or else everyone wanted to talk about something else.