The AquaticLife WiFi Reno RGBW LED Lighting Fixture 20' is great choice for fish-only tanks. This version features built-in Wi-Fi that communicate directly with your phone. This 20 inch model fits aquarium frames between 19.5 Inches and 23.5 Inches. Appropriate for fish-only aquariums Built-in Wi-Fi to communicate directly with your phone or through a router. Full spectrum RGB LED’s allows for total customization of colors over the aquarium. Easily dim the RGB and white LED’s to the desired intensity. Program multiple On/Off times directly from your phone or tablet. Adjustable width frame mounts hold the fixture securely above aquarium. Fits aquarium frames between 19.5 Inches and 23.5 Inches.