Fish ponds may experience a loss of oxygen at any time of the year, depending on the weather and amount of nutrient enrichment the pond has received; however, most oxygen depletions occur in warm weather and usually follow a period of cloudy, overcast conditions. Low oxygen concentration in pond water means stress and possibly death for the pond fish. When fish die from low oxygen, there can be serious financial consequences for commercial fish operations; for example, largemouth bass, bream and grass carp can be worth more than $3,000.00 per acre. Therefore, pond owners should consider a plan to provide aeration for their ponds before oxygen depletions occur.
Dry weather tests pond design limits for water retention, watershed area and depth. Without adequate rainfall, ponds and the property around them lose value and the pond owner can lose the fish or have to spend substantial amounts of money for weed control or pond renovation. Over the past decade, drought conditions have been the normal weather pattern across the southeastern United States. Pond design and water management options should be considered each year to plan ahead for drought effects.
Chemicals are applied to ponds and lakes to control aquatic weeds, to eliminate undesirable fish, to control undesirable insects and aquatic vertebrates, and to correct undesirable water quality problems. Pond owners are often confused by terminology, units of measure, and formulations. This publication explains how to safely and effectively use chemicals for pond management.
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