1. Water Diversity, Culture Systems and Problems 2. Important Units and Dimensions 3. Monitoring of Water and Sediment Parameters 4. Monitoring of Aquatic Biota and Eutrophication 5. Desirable Ranges of Fresh, Brackish and Seawater for Aquaculture 6. Guidelines 7. Zero Water Exchange.8. Screening, Coagulation, Sedimentation and Liming 9. Chlorination, Dechlorination, Ozonation, Oxygenation and Aeration 10. Principles and Applications of Aeration in Aquaculture 11. Control of pH, Alkalinity and Hardness 12. Control of Ammonia, Iron and Heavy Metals 13. Control of BOD and COD 14. Preparation of Artificial Sea Water and Salinity Manipulation 15. Soil Water and their Interactions 16. Integral Calculation of Doses 17. Environmental Stress and Redox Potential 18. Designing of Effluent Treatment Plants 19. Biowaste and its Application 20. Wastewater use in Aquaculture: Sewage Fed Aquaculture 21. Causes of Soil Salinization 22. Planning and Management of Reservoir Fisheries 23. Nutrients Budgeting for Fish Culture 24. Aquatic Productivity Enhancement through Nutrients Management 25. Environmental Stress and Disease Control