IF it were me. Id do one or two plants under it if you have the space to let them go to their full potential. But thats just my opinion
I'm thinking I could not use a light mover and grow 2 plants I'm growing 12 right now but I can see each plant is suffering somewhat I was thinking more like 6 next time
Im not a big fan of light movers really, I dont know why. You could do smaller to medium sized plants under just the 600 and get close to the same yield as you could with 2 bigger plants. Just forget about the light mover until your runnin a 1000 or two imo.
i have read that u base it on 100w per plant and i am personally growing 6 plants now under a 600w hps in a 1.2 x 1.2 x 2.0m grow tent