This kit features Marineland 3-stage hidden filtration with a Rite-SizeTM Z Cartridge and Marineland Bio-Foam(R) (included in the kit), and includes an adjustable flow filter pump. Bright white and blue energy efficient LED lights are hinged for easy access to the tank, and feature a 3-way switch (toggle between white and blue, off, and blue-only settings). The white LEDs create a shimmering light in the water that mimics the underwater effect of sunlight, and the blue LEDs produce a relaxing moonlight glow.