GloFish aquarium kits, lighting and décor create an underwater fluorescent wonderland that appeals to all ages and levels of expertise. With our full range of vibrant accessories uniquely designed to work with GloFish LED lighting, you can transform any aquarium into a GloFish environment at the click of a switch. The GloFish Extra Large Castle Ornament lets you add personality to any tank. This fun Castle decor piece adds even more variety to your underwater environment. Enhance any aquarium with this GloFish Ornament as you create an environment that is perfect for your space. Each GloFish Ornament provides an ideal hiding place for your GloFish—helping to reduce stress. White, blue and black lights reflect different colors off the finish and give you that GloFish experience you are looking for. Watch as the Castle ornament fluoresces under the GloFish blue LED lighting. Add the perfect final touch to an underwater kingdom with the GloFish Castle ornament. The extra large size is great for bigger tanks with more fish.