Well I have been flipping through my copy of "Sunken Gardens" I have found it very informative and useful along with "Great" pics and ideas.. Sunken Gardens is packed with everything you need to plan, design, and maintain a planted freshwater aquarium. Karen Randall shares her years of expertise and makes this enchanting hobby accessible to everyone. You’ll learn everything from the biology of aquatic plants and basic aquarium chemistry to tank maintenance and troubleshooting. Plant profiles highlight the best options for a range of tank situations, and a chapter devoted to aquascaping styles provides basic design principles and inspiring examples. With hundreds of color photographs and clear, reliable advice, Sunken Gardens is an essential introduction to a fascinating pastime.