VIPARSPECTRA Timer Control Series LED Aquarium Light Dimmable Full Spectrum for Coral Reef Grow Fish Tank VIPARSPECTRA Timer Control Series V165 LED Aquarium Light is scientifically engineered to keep the balance of the PAR output and coverage. Internal timer allows you to turn the light on or off automatically and separately. Dimmable feature can be used to adjust two channels brightness individually. V165 is full spectrum with our proprietary layout, which is contributed by thousands of ReefCentral members, has had years of success. Suitable for all photosynthetic corals, be sure to acclimate your tank or new corals to the new light by slowing increasing its exposure/intensity to the light. 3 years local warranty plus 30 days satisfaction or return guarantee.