Agriculture > All Agriculture > ANR-0232

Liming Fishponds
Russell A. Wright
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Pages / Length: 4
Publication Date: 05/10/2001

Many ponds in Alabama collect water from watersheds with soils of very low alkalinity, that is, soils with less ability to neutralize acid. Adding agricultural lime to ponds with low alkalinity can greatly increase productivity. For example, while broad swings in pH can be very stressful to the organisms in a pond, lime acts as a buffer maintaining the pH between 7 and 8.5. Lime also changes the chemistry of the water and pond soils, making nutrients more available to aquatic organisms, especially algae. Calcium from the lime is a valuable nutrient for many organisms in the pond, including snails and other animals that are important food for fishes. This succinct two-page publication provides guidelines on testing for lime requirements, an easy-to-use table of types of liming materials, and information on methods and timing of lime application.