Marinelands Silhouette 3 Gallon Kit feature 3-stage hidden filtration with a Rite-Size Z Cartridge and Marineland Bio-Foam, and include an adjustable flow filter pump. Bright white and blue energy efficient LED lights 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. This easy-to-assemble kits is beautifully designed and easy to maintain. Canopy is hinged for easy access to tank.