Yes its a light spinner... moving the plants like you said sounds like a better idea to me.... Id do some sketches 1st before constructing. I'd just put all the lights squared in the center
I've been thinking about this sucker for a long time. It just sounds easier to me to power-up a Lazy Susan than it would be to build a light mover (I would never buy one 'cause I'm too cheap - but that's another story).