Full Cycle
Intensive Culture with Partial Harvest: Plastic-Lined and Concrete Ponds
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What this protocol is for
High-density intensive culture protocol for plastic-lined and concrete ponds. Stocking density is 400 pcs per m2. A partial harvest at approximately Day 60 reduces density from 400 to 200 pcs per m2. The protocol covers pond preparation, initial culture from Day 0 to Day 4, the regular dosage schedule from Day 7 to Day 60, partial harvest, and post-harvest adjustments.
Main Objective
Manage a high-density culture system with a mid-cycle partial harvest to optimise final yield.
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When to use this protocol
Plastic-lined and concrete ponds, White Shrimp (L. vannamei), high-density intensive culture
Important Notes
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Do not use lime, dolomite, or zeolite with Blue Aqua system.
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Do not use antibiotics, disinfectants during culture, pesticides, or herbicides.
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Water exchange is not recommended. Top up with treated water for evaporation only. Water exchange may be considered case by case as an exception.
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Step by step instructions
Drain and clean liner
Drain completely. Remove sludge using soft tools. Remove debris and biofilm from liner and walls.
Optional: post-disease chlorination
Fill to maximum level. Wait 2 or more days for spores or eggs to hatch. Apply 10 ppm free chlorine (bacterial) or 30 ppm (viral). Leave 3 days. Aerate on Day 4 to evaporate chlorine.
Incoming water disinfection
Apply AlphaSep 1 to 2 ppm (10 to 20 kg per hectare) to incoming water. Leave for 1 day.
Mineral pre-treatment
Apply MinGro 10 kg per hectare for 2 to 3 days with aerators running.
Phytoplankton establishment
Apply FytoGro 15 kg per hectare. Target Secchi approximately 50 cm (stable light green to brownish colour).
Day 0: Stock PLs
Stock at 400 pcs per m2. PL age must be above PL12. Apply Artemia 1 can per 200,000 PLs, distributed evenly.
Day 2: Molasses
Apply molasses 1 kg per hectare.
Day 4: SoilGro
Apply SoilGro based on pond condition. Following day: apply molasses.
Regular dosage schedule: Day 7 through partial harvest
MinGro 10 kg per hectare weekly. FytoGro 15 kg per hectare weekly (Days 7 to 14), then 3 kg per hectare weekly (Days 15 to 60). SoilGro and BactoGro 250 g per hectare alternating weekly. Molasses 10 to 15 percent of daily total feed, applied the day after SoilGro.
Partial harvest at approximately Day 60
Harvest to reduce density from 400 pcs per m2 to 200 pcs per m2. Target harvest size: approximately 100 count. Continue growing remaining shrimp to approximately 50 count.
Post-harvest adjustments
After partial harvest: reduce FytoGro to 2 kg per hectare. Continue minerals and probiotics per schedule.
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Key parameters to monitor
Stocking density
400 pcs per m2
Minimum PL age
above PL12
Artemia at stocking
1 can per 200,000 PLs
FytoGro (pond prep)
15 kg per hectare
Secchi disk at stocking
approximately 50 cm (light green to brownish)
MinGro (regular)
10 kg per hectare weekly
FytoGro: Days 7 to 14
15 kg per hectare weekly
FytoGro: Days 15 to 60
3 kg per hectare weekly
SoilGro and BactoGro
250 g per hectare alternating weekly
Molasses
10 to 15 percent of daily total feed
FytoGro (post-harvest)
2 kg per hectare
Partial harvest timing
approximately Day 60
Density after partial harvest
approximately 200 pcs per m2
Chlorination: post disease (bacterial)
10 ppm free chlorine
Chlorination: post disease (viral)
30 ppm free chlorine
DO (pond bottom)
at least 3 to 4 ppm
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Products used in this protocol
Each product name links to its Blue Aqua product page for full specifications and purchasing.