The experiment was conducted using juveniles stocked in 150-L 12 tanks at a density of 333 shrimp/m3. There were four treatments with three replicates each: T1 — Na2CO3, T2 — Ca(OH)2, T3 — NaHCO3 and T4 — control. For pH correction, alkalinity and both pH and alkalinity corrections, we used sodium carbonate (0.06 g/L), sodium bicarbonate (0.20 g/L) and hydrated lime (0.15 g/L), respectively.