I've got an entire herb/veggie garden under a 1000w HPS running 18/6 with about a 6x6.5 footprint, peppers love it, chamomile and marigolds are happily blooming, butter crunch lettuce, beets, tomatoes, rosemary, celery, cilantro, green beans, strawberries, cucumbers, bok choy, even pineapples...