Full Cycle
Intensive Culture with Partial Harvest: Plastic-Lined and Concrete Ponds
01 — Overview
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.
Primary Objective
Manage a high-density culture system with a mid-cycle partial harvest to optimise final yield.
02 — Indications
When to use this protocol
Plastic-lined and concrete ponds, White Shrimp (L. vannamei), high-density intensive culture
Important Notes
- !
Do not use lime, dolomite, or zeolite with Blue Aqua system.
- !
Do not use antibiotics, disinfectants during culture, pesticides, or herbicides.
- !
Water exchange is not recommended. Top up with treated water for evaporation only. Water exchange may be considered case by case as an exception.
03 — Procedure
Step-by-step instructions
- 1
Drain and clean liner
Drain completely. Remove sludge using soft tools. Remove debris and biofilm from liner and walls.
- 2
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.
- 3
Incoming water disinfection
Apply AlphaSep 1 to 2 ppm (10 to 20 kg per hectare) to incoming water. Leave for 1 day.
- 4
Mineral pre-treatment
Apply MinGro 10 kg per hectare for 2 to 3 days with aerators running.
- 5
Phytoplankton establishment
Apply FytoGro 15 kg per hectare. Target Secchi approximately 50 cm (stable light green to brownish colour).
- 6
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.
- 7
- 8
Day 2: Molasses
Apply molasses 1 kg per hectare.
- 9
Day 4: SoilGro
Apply SoilGro based on pond condition. Following day: apply molasses.
- 10
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.
- 11
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.
- 12
Post-harvest adjustments
After partial harvest: reduce FytoGro to 2 kg per hectare. Continue minerals and probiotics per schedule.
04 — Parameters
Key parameters to monitor
Parameter
Target / Range
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
05 — Products
Products used in this protocol
Each product name links to its Blue Aqua product page for specifications and purchasing.