Marineland Advanced LED Strip Light, 24-36" Appropriate for fish-only tanks as the main light Built-in digital timer automates 24-hour aquarium lighting sequence 8X 1 Watt 7500K White Daylight LEDs & 4X .6 Watt 460nm Actinic/Blue LEDs Adjustable mounting legs offer flexibility in tank sizes and can expand from 24" to 36" Dimensions: 24" x 5" x 1.5" high