Supposedly the 600w is the most efficient as far as lumens per watt goes.
MaryLane Reviewed by MaryLane on . 600 or 1000? ok... i like overkill... i have 2 plants i want to flower in a closet, my side experiment. the closet is like 2.5ft wide,4 foot wide and about 5 ft high i have a 600, and 1k hps, both have vented hoods what should i do? Rating: 5