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Can be used to increase the total hardness of waters.Maintenance of calcium levels in hatchery situations.Adequate levels of calcium are critical for bone formation in fish and exoskeleton formation in crustaceans.The calcium ions supplied by gypsum act as electrolytes in the flocculation of colloidal particles. For example, gypsum applied at rates of 100-500 mg/litre substantially reduced turbidity in one study. However, similar reductions in turbidity, were achieved using 20-25 mg/L of alum, which is a more cost effective treatment.
Can be used to increase the total hardness of waters.Maintenance of calcium levels in hatchery situations.Adequate levels of calcium are critical for bone formation in fish and exoskeleton formation in crustaceans.The calcium ions supplied by gypsum act as electrolytes in the flocculation of colloidal particles. For example, gypsum applied at rates of 100-500 mg/litre substantially reduced turbidity in one study. However, similar reductions in turbidity, were achieved using 20-25 mg/L of alum, which is a more cost effective treatment.