They aint cheap so I would want someone to tell me if they dont do the job. I wish the LED manufacturers would just tell the truth, Yes with the sp2000 you can flower in 2 X 4 tent but but if the canopy covers the full 2 X 4 area the outer buds wont get the light they need if the canopy is flat. If the canopy is 18 X 40 it would probably do ok but it wont be great.