Seasonal water quality checklist for aquaculture operations (winter)
Company name
Personnel Name
First Name
Last Name
Date and time
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Month
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Day
Year
2 digit month, 2 digit day, 4 digit year
Date
Hour Minutes
AM
PM
AM/PM Option
Tank / pond ID
Complete this form weekly basis (or more often as needed) and take appropriate action. Contact Aquaglobal Veterinary Consulting for further support. This checklist is not intended to prescribe specific water quality parameters to be evaluated -tailor water quality testing to suit your specific aquaculture system
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Notes
Evaluate daily water temperature (should be within the species minimum feeding threshold)
Limit (ration) /cease feeding based on temperature and feeding response
Remove uneaten food within 15-20 minutes
Maintain minimal aeration continuously to prevent DO crashes
Use surface agitator or heater to maintain ice-free zones (for ponds prone to icing)
Evaluate DO at surface level, mid-depth, and a calm, ice-covered area once weekly
Increase aeration or break ice manually /with a de-icer if DO < 5 mg/L
Monitor un-ionised ammonia twice weekly using a cold-water calibrated kit
Perform a 10-20% water exchange if > 0.1 mg/L NH₃
Postpone grading, crowding or other handling until water warms again (where possible)
Evaluate for visual signs of infection / stress twice weekly (e.g. pale gills, excess mucous, fin erosion, abnormal swimming)
Contact your aquatic veterinarian if > 5% animals display abnormal symptoms
Ensure a backup power supply available
Monitor inlet /outlets for blockage by ice /debris daily
Schedule procedures such as surgeries, vaccinations, tagging, tank maintenance, etc. late autumn or early winter when waters are warmer
Test aeration systems : 30-minute system test and verify air output at multiple pond depths
Ensure aeration systems are serviced regularly
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