A nano-aquarium--that is, a small-volume aquarium--requires special attention because decline in water quality and increased fish stress levels change in inverse proportion as tank sizes become smaller. Two aquarium experts tell hobbyists everything they need to know about setting up a miniature aquarium. All titles in Barron's profusely-illustrated '' Complete Pet Owner's Manuals '' introduce inexperienced and prospective pet owners to the pleasures and duties of pet care. They also make ideal guides for older children having their first experiences as animal caretakers. Attractively illustrated and filled with helpful information, '' Barron's Complete Pet Owner's Manuals '' advise on purchasing, housing, feeding, health care--and where applicable, grooming and training pets. Each book is individually written by an expert--a trainer, breeder, veterinarian, or other animal specialist. These manuals cover every popular dog and cat breed, as well as bird varieties, hamsters and other small caged animals, fish varieties for aquarium hobbyists, terrarium pets, and even exotics, such as reptiles, amphibians, and scorpions. All books have 70 or more color photos, and most also have instructive line illustrations.