Coastal Aquaculture and Mariculture (2+1)

Unit 4 - Water and soil quality management

4.1.2.c. pH

• pH is an indicator of hydrogen ion concentration in water.
• The mean pH of ocean is about 8.3 and remains fairly constant because of the great buffering capacity of the oceans.
• Since the optimum range of pH is 6.5 to 8 pH is rarely a concern in brackish and sea waters.

MEASURING pH IN THE FIELD