Fish are totally dependent upon water to breathe, feed and grow, excrete wastes, maintain a salt balance and reproduce. Massive mortality of fish may occur following dissolved oxygen depletion, toxic algal blooms, or other in-pond water quality problems. To a great extent, water quality determines the success or failure of an aquarium livestock keeping establishment. Physical and chemical characteristics, such as suspended solids, temperature, dissolved gases, pH, mineral content and the potential danger of toxic metals, must be considered in the selection of a suitable water source. Of these many water quality characteristics, key elements such as dissolved oxygen, temperature, ammonia, pH and alkalinity shall be highlighted. The direct impact of dissolved oxygen and oxygen saturation on fishes and the role of dissolved oxygen in the Nitrogen Cycle will also be discussed.
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Aquarama Magazine
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CPM Business Media
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