Effect of various treatments of pond bottom soil containing organic sludge was studied in the experimental tanks. Pond bottom soil was added to a depth of 4 cm in fiber glass tanks (0.8 × 1.2 × 0.6 m) and overlaid at 6 cm depth with organic sludge to simulate the post-harvested pond bottom soils in shrimp ponds. Eighteen tanks were set up for five treated groups and a control group in triplicate (N = 3). The experimental period was divided into 3 phases. In the first phase, pond bottom soil and organic sludge were placed in tanks and subjected to 15 days of experiment. The five treatments included: (1) drying with sunlight and tilling, (2) drying with sunlight and tilling with lime, (3) drying with sunlight and addition of lime, (4) drying with sunlight and addition of probiotics and (5) drying with sunlight and tilling with probiotics.