Upgrade your standard white lighting to Multi-Color Remote Controlled (MCR) LED lighting. The MCR light will change how you experience biOrb. Use the remote to select one of the sixteen preset colors, fade through the entire spectrum of colors, and control the brightness of the lights You can also set automatic 8-, 10-, 12- or 14-hour day and night cycles for a more natural scene This Accessory comes with a small MCR LED grey colored lighting unit, 1 remote control with batteries, lighting tray, and instructions The small MCR Accessory is suitable for biOrb LIFE 15, TUBE 15 and 35, and all biOrb CLASSIC aquariums Only compatible with aquariums that include a black transformer (model # 46040)