The CoraLife seascape LED aquarium light fixture is a high quality, customizable aquatic light fixture featuring 8 Preset colors with unlimited color combinations with a steady PAR level to maintain and grow both sensitive plants and corals. The unit has a 24-hour timer that allows you automatic 30 minute ramp times to accurately and gradually replicate the natural sunsets and sunrises that your aquarium inhabitants are used to in the wild. The CoraLife seascape LED aquarium light fixture comes with a handheld controller that allows you to independently control The white, Blue and RGB LED lights with adjustments in 10% increments as to not stress out tank inhabitants with drastic visual changes