Water Quality Standard
Optimal Water Parameters & Tolerance Thresholds
| Water Parameter | Optimal Range | Critical Stress Limit | Field Management SOP |
|---|---|---|---|
| Water Salinity | 10 – 28 ppt | < 2 ppt or > 40 ppt | Buffer low salinity with Potassium Chloride (KCl) & Magnesium Chloride (MgCl2) at 1:3 ratio. |
| Dissolved Oxygen (DO) | > 5.0 mg/L | < 3.5 mg/L | Deploy 1 HP paddlewheel aeration per 350 kg biomass. Run 24h during cloudy monsoon periods. |
| Water pH | 7.6 – 8.3 | < 7.2 or > 8.8 | Apply Agricultural Limestone (CaCO3) @ 50 kg/acre if pH dips below 7.5. |
| Total Alkalinity | 120 – 180 ppm | < 90 ppm | Dose Sodium Bicarbonate (NaHCO3) @ 25 kg/acre to restore buffering capacity. |
Financial Economics
Cost-of-Production & Margin Worksheet (Per Acre)
Estimated commercial financials based on current feed, seed, electricity, and farmgate spot rates.
Seed Input
₹ 70,000 / Acre (1.8 Lakh PL @ ₹380/1000)
Feed Cost (60%)
₹ 5,20,000 / Acre (5.5 Tons @ ₹95/kg)
Power / Utility
₹ 75,000 / Acre (12 HP continuous schedule)
Inputs & Minerals
₹ 45,000 / Acre
Gross Realization
₹ 9,80,000 (2,000 kg 30-count @ ₹490/kg)
Net Profit Margin
₹ 2,40,000 – ₹ 2,90,000 per Acre
Nutrition & Feeding Protocol
Formulated Feed Protein:34% to 38% Crude Protein (Pelleted Extruded Feed)
Meal Schedule:4 to 5 timed rations daily (6 AM, 10:30 AM, 2:30 PM, 6:30 PM, 10:30 PM)
Checktray Inspection Window:Inspect checktrays strictly at 2.0 to 2.5 hours post-feed
Standard CIBA Operating Procedures (SOP)
- Pond Preparation: Scrape central black sludge, plough soil, and broadcast Quicklime (CaO) @ 1,200 kg/ha.
- Reservoir Biosecurity: Chlorinate incoming sea/creek water @ 30 ppm active chlorine and aerate 72h before stocking.
- Seed Quality: Source only 100% SPF (Specific Pathogen Free) PL12 certified negative for WSSV, EHP, and AHPND by nested PCR.
- Probiotic Dosing: Ferment Bacillus subtilis with jaggery for 18h and inoculate pond weekly to outcompete green Vibrio.
- Checktray Rule: Cut feeding by 40% immediately during heavy rainfall, overcast skies, or when DO drops below 4.0 ppm.