Are you still talking about a 3 x 3 space? That's a pretty short track!

If your emitters are grouped together or lensed so the light is acting like a single point source (capable of throwing "shadows") a mover might make sense in a long enough space. The dispersion (and reflections) you get with the 15W leds is quite even, and a mover would benefit them less than, say, a Procyon (because of its lensing).

I played around with covering a 3 x 3 space a bit. Best way to light it depends on what's in there, to a degree. 1 biggun? 4 @ 18" sq? A mixed bag of strains and ages? I'm liking the flexibility of 1, 2, even 3 lights you can move in close to the plants as opposed to the "hovering mothership" concept. Just able to hit the plants harder, seems like.

And if you're looking at heatsinks with 2.5" fins, those may be inconvenient to work with. :jointsmile: