Table 1 pH_NBS, total alkalinity, and calculated pCO₂ at the start of the experiment and after 2 or 4 weeks of incubation

pH 8.10

 Start

8.10

2,362

477

 Week 2

8.12 ± 0.00

2,366 ± 5

459 ± 5

 Week 4

8.09 ± 0.02

2,354 ± 21

493 ± 21

pH 7.81

 Start

7.81

2,257

931

 Week 2

7.81 ± 0.01

2,235 ± 11

919 ± 35

 Week 4

7.79 ± 0.01

2,242 ± 12

973 ± 26

pH 7.67

 Start

7.67

2,206

1,238

 Week 2

7.70 ± 0.01

2,193 ± 2

1,195 ± 18

 Week 4

7.69 ± 0.01

2,203 ± 9

1,236 ± 43