What should be the quality of water for shrimp farming?

Shrimp farming needs best quality water in terms of oxygen levels. The pond or tank in which shrimp are farmed should be aerated 24 hours a day,7 days a week. The other parameters of water that are equally important are temperature, pH, alkalinity, hardness etc. The pH of the water should always be less than 10 because beyond this level it causes mortality.