Working hours: Mon - Fri | 08:00 - 17:00HOTLINE: 0867 95 7568
Back to Brochures
Solution Brochure

Biofilm formation stages and how to break them — core knowledge for Vibrio control

Biofilm is Vibrio's “fortress” shielding it from antibiotics and shrimp immunity. Understanding the 4 formation stages is key to choosing the right timing and tools to break them.

Vibrio is not pathogenic when isolated — it becomes dangerous only when colonies aggregate into biofilms. This “fortress” shields bacteria from antibiotics, evades phagocytes, and concentrates toxin secretion. Understanding the 4 stages of biofilm formation is the key to knowing when and how to break them.

1. Four stages of biofilm formation

Biofilms develop in a clear cycle — multiple intervention points exist:

  • Stage 1 — Reversible adhesion: scattered bacteria attach to surfaces (pond liner, gut). Easily reversible.
  • Stage 2 — Irreversible adhesion: secrete exopolysaccharide (EPS) — detachment becomes hard.
  • Stage 3 — Maturation: multi-layer 3D structure, bacteria “communicate” via Quorum Sensing, concentrated toxin output.
  • Stage 4 — Dispersion: bacterial clusters break off seeking new surfaces — cycle repeats.

2. Why antibiotics alone don't break biofilms

Thick EPS blocks 70 – 90% of antibiotic diffusion. Core biofilm bacteria switch to “persister” state — slow metabolism, antibiotic-immune. Once antibiotics stop, biofilms re-disperse and disease relapses immediately.

3. Breaking biofilm — Than Vuong's 3-layer strategy

Attack all three stages simultaneously to break the cycle:

  • Layer 1 — Block adhesion: probiotics (SOILMAX, LALSEA BIOREM) occupy surfaces before Vibrio arrives.
  • Layer 2 — Disrupt Quorum Sensing: CLEVER peptides cut signals, preventing biofilm coalescence.
  • Layer 3 — Break existing EPS: OZYME enzymes cut slime + VIBRIO CLEAR disinfection when needed.
  • This 3-layer combo outperforms antibiotic monotherapy many-fold — without driving resistance.

Want deeper understanding to choose the right anti-biofilm protocol?

Contact Than Vuong via Zalo 0867 957 568 — we share detailed technical material on biofilm + Quorum Sensing in intensive shrimp culture.

Ask Than Vuong

Aquaculture technical assistant

Hello there 👋

Describe your pond issue or pick a question below.