lights lights lights

i've got only one plant, which is an unknown very indica looking strain...anyways a friend of mine lent me this bulb Coralife 20000k Marine Fluorescent on a simple black-light "ballast" should i keep it because its energy efficient, or is it too weak? it seems pretty bright and very blue for my veg. cycle. any one?

They like blue light but its kinda wimpy. I have 2 of om over a 10gal saltwater tank and its barely enought. Maybe if youre into Banzi