VIPARSPECTRA 165W LED Aquarium LightVIPARSPECTRA V165 Timer Control Series Aquarium LED Light is scientifically designed to maintain the balance of PAR output and coverage. The internal timer allows you to turn the light on or off automatically and separately. The dimmable function can be used to adjust the brightness of two channels individually. V165 is a full spectrum with our patented design, which is contributed by thousands of ReefCentral members, it has had years of success.