The Aqua Culture 20/55 Gallon Aquarium Hood will work on any compatible 20 or 55-gallon tanks. The LED lights inside the Aqua Culture Aquarium hood radiate a natural daylight glow to promote aquatic movement and activity for greater viewing pleasure. This LED aquarium hood contains cutouts for easy access to make feeding time and routine filter changes quick and easy, since they eliminate the need to remove the entire hood. The LED bulb is long lasting, so you can enjoy it longer without the need for frequent bulb changes. The Aqua Culture 20/55 Gallon Aquarium Hood is low-profile, so it won’t be top heavy on the tank to promote greater stability. This Aqua Culture aquarium hood is designed to fit virtually any 24-inch by 12-inch tank, so it works well with a wide range of aquariums. If you have a larger 48-inch tank of up to 55 gallons deep, you only need to combine two hoods to enjoy the same quality function. This hood works well with both fresh and salt water tanks.