The real questions are what the quality of the lights and color spectrum is. Plus it's more about par-watts or usable light to the plants.

How many lumens and what color is a better way to look at your lights then just watts.

Light coverage is just as important 1000w will be good coverage for about 4x4 but a 4x6 the ends will have less light.

Just something to think about.
Zandor Reviewed by Zandor on . 115 watts per square foot I plan on using around 115 - 120 watts per square foot during bloom in a room 4x4 or 4x6. Is this way overkill for very high quality mary jane? Rating: 5