- Use TA - KHOANG TAT No79 2-3kg/1,000m3
- Use the microorganism TA - GOLD (0.5kg/1,000 - 1,500m3)
- Use 200 - 300kg of CaO in 1,000m3 of water to soak for 5 - 7 days
- Use the microorganism TA - PONDPRO at the closage of 0.5kg per 1,000 - 1,500m3) of water