This book identifies algae that commonly bloom in aquariums, with photographs and descriptions of their life history. Specific recommendations offer ways to control the algae through aquarium husbandry practices and the use of herbivores. If your expensive aquarium has an out-of-control algae bloom that is driving you crazy, don't give up. Buy this book and follow Julian's advice. 80 pages, 7-1/8" X 8". Full color pictures throughout.