Water Quality in Aquaculture

1
Water Quality in Aquaculture

• General Principles

2
Water Quality Major Parameters

• Temperature
• Salinity
• Dissolved oxygen
• pH
• Alkalinity
• Ammonia and nitrite

3
Range of Salinities in Aquaculture
Brackish Estuarine Waters
Oceanic Waters
0
3
6
9
12
15
18
21
24
27
30
33
35
38
40
gt55

SALINITY PPT
4
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Daily DO CO2 CyclePhotosynthesis
6
Daily Dissolved OxygenMinimum Values (6 AM)
Plankton crash
7
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pH and Aquaculture


Neutral
2 3 4 5 6 7 8 9 10 11

Acidic
Basic
9
Daily pH CO2 CyclePhotosynthesis
10
pH Toxicity
ammonia
nitrite
H2S
Neutral
2 3 4 5 6 7 8 9 10 11

Acidic
Basic
11
pH Ammonia Toxicity
12
SECCHI DISK