Not a bad light to grow with. The light I use was ment for a 4x4 grow tent on full power so I dimmed it down a bit so the grow space doesn't get too warm.
For the price it is a very good light. I want a white light next as i found the purple to be a bit T-eye-ring. Heat is a bit much also with an average increase of 5-6c in my tent between on-off.