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Ammonia poisoning is a common fish disease in new aquariums, especially when immediately stocked to full capacity. Ideally, the level of ammonia (NH3) and ammonium compounds (i.e. those containing NH4+) should be zero. Although trace amounts are generally harmless, they can still lead to problems over time. Understanding the nitrogen cycle is essential for the keeping of any aquatic life. The amount of ammonia present is usually accompanied by a rise in pH. As ammonia is a base, it is stabilized by alkaline water. It can cause damage to the gills at a level as small as 0.25 mg/L. ==Diagnosis== A history of the tank: filter changes, power outages, excessive feeding, or the addition of microbicidal or antibiotic agents to aquarium can aid in diagnosis. An ammonia test is the most sure way of diagnosing ammonia poisoning. Symptoms include: # Purple, red or bleeding gills # Fish may clamp, may appear darker in color # Red streaking on the fins or body # Fish may gasp for air at the surface of the tank water # Torn & jagged fins # Fish may appear weak and lay at the bottom of the tank 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ammonia poisoning」の詳細全文を読む スポンサード リンク
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