This aquarium light bulb is perfect for both saltwater and freshwater aquariums. With a 24-inch length and T-5 bulb type, it provides optimal lighting for your aquarium. The UV Lighting Company has designed this bulb to be compatible with all water types, making it a versatile option for any aquarium setup. The F24 model is easy to install and use, providing a consistent and reliable lighting source for your fish, plants, coral and aquarium. It is suitable for use in both small and large aquariums, and is a must-have accessory for any fish enthusiast. Some of the boxes may have a tear or bend or sticker on them others are in perfect condition as all lights are brand new never used. I had a case of 50 at time of listing. Shipped fast and safe. Thanks for looking.