Protocol QT-03
Co-infection: haemorrhage and bacillary necrosis
Usually appears after a first course that did not clear. The document names the cause plainly: a dragged-out treatment and repeated antibiotic courses.
Step 0 · Identify
What you see at the pond
Open 10–20 fish and count the ratio before choosing a branch. This step cannot be skipped.
- Both internal pus spots and external haemorrhage
- Open 10–20 fish and count which dominates
- Necrosis dominant → branch A. Haemorrhage dominant → branch B
Treatment
Day by day
Environment first, medicine after. The chart below includes the withdrawal period.
- 1Stop feeding, change 30% of the waterDay 1
Stop feeding entirely.
- 2Sample fish and assess the ratioDay 1
Open 10–20 fish and count whether internal pus spots or external haemorrhage dominates. This decides the branch.
- 3Branch A — necrosis dominantDay 1–4VIBRIO CLEAR then KMnO₄ + salt1 kg/3,000 m³ · 1 kg/1,500 m³ + 15 kg/1,000 m³
KMnO₄ and salt are common inputs.
- 4Branch B — haemorrhage dominantDay 1–2POWER GLUTA1 L / 5,000 m³, two consecutive days
- 5Antibiotic — by branchDay 1–10Branch A: FLOR-MAX · Branch B: OXYTETRAFLOR-MAX 1 L per 600–1,000 kg feed, once daily, 7–10 days · OXYTETRA 2–3 g/kg feed per meal, twice daily, 5 days (per label)
- 6Cut the pathogen loadDay 12FYTOBLOOM PLUS1 L / 1,000 m³
Without FYTOBLOOM PLUS, use AQUA DINE New 1 bottle/2,000–2,500 m³.
- 7Recovery, raise feed graduallyDay 11–14CANFORTA · HERB GUARD · QUICKSHELL GOLD1 L/800 kg + 1 L/1,000 kg + 1 L/1,000 kg feed
Withdrawal
4 weeks
Branch A (FLOR-MAX) 12 days, branch B (OXYTETRA) 4 weeks — per label, from the last dose.
No improvement in 3–5 days
This is already the pond's second course. If it still does not clear, do NOT run a third — that is the road to the white liver, white gill condition in QT-04. Switch to liver recovery and environment work, and call Than Vuong technical staff to the pond.
Note
Remove all dead fish. Do not raise the feed rate during treatment.
Products used
What to keep on hand
Doses are given in each step above. Open a product for its full label and registration number.
QUICKSHELL GOLDProvides minerals, supplements iron for rapid blood formation, and promotes thick, lustrous, healthy skin and scales.
HERB GUARDHerbal blend that supports liver health and helps with pale liver
POWER GLUTABroad-spectrum disinfectant against bacteria, fungi and protozoa; helps fish wounds heal faster
CANFORTAHigh-absorption vitamins and amino acids — helps fish grow and recover quickly
OXYTETRAFor hemorrhagic enteritis caused by Aeromonas/Pseudomonas in pangasius; for luminous disease caused by Vibrio in shrimp larvae
FLOR-MAXFor intestinal bacterial infection caused by Edwardsiella ictaluri in pangasius and basa catfishEasily confused with
Related protocols
If the signs do not match cleanly, check these before starting any medicine.