Asian-Pacific Aquaculture 2019

June 19 - 21, 2019

Chennai Tamil Nadu - India

WATER QUALITY MANAGEMENT FOR SUCCESS IN AQUACULTURE

K. Sakthivel
Centre of Advanced Study in Marine Biology
Faculty of Marine Sciences, Annamalai University
Parangipettai - 608 502, Tamil Nadu - India
 

The success of aquaculture is dependent on the water qualities Parameters (physical, chemical biological) such as temperature, pH, color, BOD, ammonia, nitrite, nitrate, primary productivity.  In the present study we reviewed that the water quality management in the aquaculture.  Aquatic animals are stressed and disease outbreaks occur after a sudden temperature change and cause high mortality when moved from one environment to another, the optimum temperature between 25°C - 35°C.   The salinity 10-25 ppt is suitable for euryhaline species.  The optimum turbidity from 30-60 cm, less turbidity prevents the plankton growth and high turbidity increase algae growth.  Light greenish or greenish color of water is suitable, dark brown and dark great is not deal. Minimum DO should be greater than 5 mg/L for growth of warm water fish and 6 mg/L coldwater fishes.  The pH occurs in the range of 7.5 to 8.5 is the optimum.  The CO2 level 5-8 ppm is need for photosynthesis.  Ammonia is produced from wasted food, fecal and dead animals, it maximum limit 0.1 mg L-1.  The calcium ranges 40 - 100 mg L-1(100 - 250 mg L-1 as CaCO3) are good for certain fishes.   The acceptable level of nitrite not exceed 0.5 mg L-1 and nitrate 0.1 - 4 mg L-1 .  Phosphorus in water is in the form of phosphate (PO4) and the desirable level 0.06 mg L-1.The productivity 1.5 - 10 mg C L-1 and. Plankton population 2000-4500 nos. L-1 as optimum. The water quality parameters influence health of a pond and are required in optimum values to increase the production.