A pair of small low-power LED lights featuring Red and Blue light frequencies specifically designed for refugiums where the objective is to grow plants. Approximately 10 watts each. Never used. They fit a standard light socket and can be used with many hanging fixtures. They have 3 bulbs each: 2 red and 1 ~454nm blue, Photos show the exact item and include a 'demo photo' with the lights installed over one of my tanks (top tank). Typical usage is over a much smaller tank.