01 · AquaGrow
What it is
Acclimation means helping seed adjust to the receiving conditions. The appropriate process depends on species, stage, seed condition and both waters. A fixed timing rule cannot guarantee safe transfer.
Signs to watch for
- Weak or abnormal swimming during or after transfer.
- Water readings differ between source and destination.
- Losses follow an abrupt or poorly recorded receiving process.
Common causes
- Temperature, salinity or other chemistry differs.
- Oxygen or transport-water quality deteriorates.
- Seed quality, handling or illness complicates receiving.
How to confirm the cause
- Check seed condition and source/receiving water, including DO, temperature, pH and salinity.
- Record the actual transfer steps and ask a technician to assess the combined water and animal risks.
What to do immediately
- 1
Ask the receiving technician for prompt assessment; do not continue a failing transfer blindly.
- 2
Maintain the appropriate safe oxygen support and avoid further sudden water changes.
- 3
Follow a measured, stage-specific receiving or recovery plan. Do not extend acclimation indefinitely in poor transport water.
- 4
Keep lot identity and record conditions and losses; obtain a health decision before mixing or stocking suspect seed.
Prevention: your practical checklist
- Share source and receiving-water readings before dispatch.
- Prepare suitable water, equipment and trained receiving staff.
- Use a documented plan that accounts for transport-water condition as well as salinity.
When to call an expert
- Treat severe weakness, deaths or oxygen deterioration during receiving as urgent.
- Seek advice before transfer when water differences or seed health cannot be assessed.
Farmer questions
Does longer acclimation always improve survival?
No. A prolonged process in deteriorating water may add risk. The technician must assess seed, both waters and the appropriate transfer plan.
Is salinity the only value to match?
No. Temperature, pH, oxygen, other chemistry and animal condition also matter. Do not base the decision on salinity alone.
Can I use one acclimation schedule for every stage?
Do not assume so. The procedure should fit the species, life stage, quality and receiving conditions.
Sources & further reading
AI-assisted educational content and translations, source-checked 17 October 2026. Not an individual diagnosis or prescription. Independent aquaculture-health and native-language specialist approvals have not been supplied. Sources do not endorse AquaGrow.
- SHAPHARI hatchery operating guidelines — production, biosecurity and records ↗MPEDA; linked guideline, not AquaGrow certification or a legal-compliance audit
- Hatchery operations and assessment framework (2007) ↗FAO FTP 446; historical P. monodon manual, not a vannamei treatment protocol