I purchased a few of these 12"lights in different configurations to see what I liked best and to try to fit 3 in a BioCube 29, I could only get 2 under the lens so I am selling one. This is the regular output 20k version of their light. Used less then a week. Im running the current ones at about 75% to prevent bleaching in acans Looking for $100 shippd. Paypal Only.