Deco O 5Ga White. Who Said desktop aquariums have to be boring? AA Aquarium"s Deco O give you style, character and state-of-the-art features. Deco O is a great decoration at home and gives life to your environment. Comes complete with HPLEDs in our uni-module construction design with bonus moonlight feature. Magic touch lighting to select daylight or moonlight just by touching the top of the tank. Comes complete with air filtration, deco rock, gravel, plant. Just add water and fish.