This text elucidates the relationship between bottom soil and water quality. An understanding of this important connection is essential for maintaining water quality within optimum ranges for shrimp and fish. The impact of soil-water interactions on water quality is examined, and the volume provides important methods for enhancing the soil conditions in ponds. Detailed chapters include coverage of: soils in pond aquaculture; physical, chemical, and mineralogical properties of soil; soil nutrients; the exchange of dissolved substances between soil and water; soil organic matter, anaerobic respiration, and oxidation-reduction; sediment soil; relationships to aquatic animal production; and pond bottom management and soil analyses.