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Dr John Gratz (1 results)
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Hardback. Dr John Gratz, Tetra Press. "Aquariology: Fish Diseases and Water Chemistry" (1993, Tetra Press) by Dr. John Gratzek is a foundational text addressing aquatic health, emphasizing that most fish diseases stem from environmental stress, poor water quality, and improper husbandry. Proper aquarium management requires balancing nitrogenous compounds, monitoring pH (4.0-11.04.0 - 11.04.0-11.0), and preventing diseases like Ich and bacterial infection. Hardback.
