hi there , i have a fluro light that my father used when growing corals , so basically a fish tank fluro. on the bulb it says 10,000k , which i dont know what that means? Is this strong? Weak? its also called this : Coralife 10,000K High-Intensity Purified Super Daylight Lamps http://www.petco.com/product/5707/Coralife-10-000K-High-Intensity-Purified-Super-Daylight-Lamps.aspx thanks