Integrated Bio-Hatchery Protocol (IBHP)

Integrated Bio-Hatchery Protocol (IBHP)

Update Version — 2.2.2026

In short, four logical steps greatly reduce the chance of disease and significantly increase the nutritional value of newly hatched Artemia.

Step 1 Sterilize
→
Step 2 Neutralize
→
Step 3 Colonize
→
Step 4 Enrich

A Biosecure, Probiotic-Driven Approach to Live Feed Production

Step 1

Sterilize (Vessel Preparation & Rehydration)

  • Action: Sterilize the hatching vessel and rehydrate cysts to remove pathogens and chemical residues.
  • Recommended Method: Use Sodium Percarbonate (0.25g per Liter) in clean seawater at 20 PPT.
  • The Chemistry: Sodium Percarbonate contains approximately 32.5% Hydrogen Peroxide by weight. A dose of 0.25g/L releases approximately 81 ppm (mg/L) of Hydrogen Peroxide.
  • Dosing Context: This dose rate is safe for a rehydration rate of cysts of approximately 2 grams per Liter.
    • Note: As higher amounts of cysts are used (in grams per Liter), you may need to increase the Sodium Percarbonate because there is more organic waste for the same volume of water.
  • Why: It creates a “soft” clean using active oxygen and high pH to scrub cyst shells and stress pathogens.

⚠ Critical Note for Magnetic Cysts: If you are using magnetic separation cysts (e.g., Sep-Art), you must perform a test to ensure the Sodium Percarbonate does not affect the magnetic coating.

Aquaculture Note: If using Chlorine or Virkon to sterilize the external shell, you must check for residuals. However, the subsequent draining step significantly mitigates this risk.

Step 2

Neutralize (The Water Swap)

  • Action: Physically remove the “dirty” oxidative water and replace it with probiotic-rich water.
  • The “Neutralization” Process: After 6–12 hours (once the oxidative reaction has subsided and cysts are rehydrated), drain the entire vessel through a sieve of approximately 150 to 200 microns.
    • Function: This screen size retains the biological mass (cysts) while letting all the dirty water through. Stop draining before the cysts are exposed to air/dry out.
    • Optional Rinse: You can rinse the cysts with a little clean water at this stage. Especially important if you used Chlorine or Virkon in Step 1 to ensure any residuals are removed.
  • Chemical Breakdown: Sodium Percarbonate separates into Hydrogen Peroxide and Sodium Carbonate. The increased pH from Sodium Carbonate helps lyse the cyst/shell exterior, working in tandem with the Hydrogen Peroxide to sterilize the surface.
  • The Refill: Rinse the cysts back into the vessel using water that has already been inoculated with probiotics.
  • Why: This prevents the “Sterile Vacuum.” Cysts continue their development in a bath of beneficial bacteria rather than a chemical soup.
Step 3

Colonize (The Hatch & Separation)

  • Action: Hatch Artemia in a probiotic environment and separate nauplii from shells.
  • The Hatch: Artemia emerge into a “probiotic soup.”
    • Biological Note: At Instar 1, nauplii do not have a functional mouth or anus, so the probiotics do not colonize the gut yet. Instead, the beneficial bacteria coat and colonize the external surface of the nauplii. If some nauplii progress to Instar 2, they may begin to feed on the bacteria, which is also beneficial.
  • Probiotic Action: Competitive exclusion + digestive enzymes + metabolites antagonistic to disease.
    • Product Choice: BTA uses Microplex or a blend for food inoculation, but you can use whatever you find effective.
  • Separation:
    • Option A (Magnetic): Run harvest through magnetic separator.
    • Option B (Standard): Use flotation/separation method.
  • Cleanliness Strategy: By performing separation before enrichment, you remove unhatched and hatched cysts from the water. If using normal cysts (Option B), this allows a second quick separation after the enrichment phase for very clean nauplii.

⚠ Important: Do not sterilize the nauplii after harvesting. You have already sterilized the shells in Step 1 and colonized the nauplii in Step 2. Sterilizing now would destroy the beneficial probiotic coating you have just achieved.

Step 4

Enrich (The Boost)

  • Action: Boost the nutritional profile of the clean, colonized Artemia.
Scenario A — The Hobbyist

Same Vessel

  • Return clean nauplii to the same hatching vessel with current water (minus shells).
  • Top up with clean, probiotic-laced water if desired. Add enrichment media.
  • Enrichment Choice: Enrich-UM recommended, but any EPA/DHA product works.
  • Benefit: Saves space and equipment. Since the water and Artemia are already colonized, there is no need for a new “clean slate.”
Scenario B — Aquaculture Production

Separate Vessel

  • Transfer clean, colonized nauplii to a dedicated Enrichment Vessel.
  • This vessel should be pre-filled with clean water and probiotics, and must be aerated to help the probiotics survive and provide oxygen for the Artemia nauplii.
  • Add enrichment media (Enrich-UM recommended).
  • Benefit: Frees up hatching vessels immediately for the next production cycle, allowing a tight rotation schedule.
It's a few extra simple steps
that result in a far higher quality end product.

And it makes SENSE!

Ever looked at your hatchery protocol and thought,
“that don't seem right… at all”?

Or wondering why the probiotics you are adding are not working?

It's not you, and it's not the probiotics.

It's the way you've been told to do it.
And it's wrong.

Section 1

The Philosophy: Why the Industry Standard Fails

The Current Issue

Standard commercial protocols often recommend a “cocktail” approach: adding disinfectants, cysts, and probiotics simultaneously, or adding probiotics into water that still holds residual sanitizers.

  • Biological Conflict: Disinfectants are non-selective; they kill beneficial bacteria (probiotics) just as effectively as they kill pathogens.
  • Economic Waste: Data indicates that residual sanitizers can reduce the viability of applied probiotics by >90%. Following these flawed protocols means you are effectively pouring premium product down the drain.
  • The “Sterile Vacuum”: Sterile water has no biological buffer. Once the sanitizer dissipates, the water becomes a vacuum. The first bacteria to enter (often opportunistic Vibrio from the air or cyst shells) will dominate the system.

The IBHP Solution

We treat the hatchery and enrichment vessels not as sterile buckets, but as Controlled Biofloc Reactors. The goal is Competitive Exclusion and colonization by probiotic microbes: We sterilize the equipment to create a blank slate, remove all chemical traces, and then flood the system with beneficial bacteria to occupy every biological niche before pathogens can establish themselves.

Section 2

The Protocol Steps & Rationale

Phase A

Hatching Vessel Preparation (Sterilize)

Objective: Create a pathogen-free environment without leaving toxic chemical residues.

Method Option 1: The Traditional “Hard” Clean (Chlorine/Virkon)

  • Procedure: Sterilize the vessel and cysts using standard commercial disinfectants.
  • The Issue: These chemicals bind to plastics and biofilms. Even after a quick rinse, they leach back into the water, creating a “kill zone” for probiotics.
  • The IBHP Fix: You must Rinse, Neutralize (using Thiosulfate if using Chlorine), and Rinse again.

⚠ Mandatory Check: Use a test kit (e.g., DPD Chlorine test) to ensure ZERO RESIDUALS. If the test registers any chemical presence, do not proceed until it is rectified.

Method Option 2: The Oxidative “Soft” Clean (Sodium Percarbonate) — Recommended

  • Procedure: Fill the vessel with clean seawater (20 PPT). Dose Sodium Percarbonate at 0.25g per liter. This adds approximately 81ppm hydrogen peroxide and increases alkalinity.
  • The Rationale: This acts as your primary disinfectant alternative. The high pH serves to osmotically stress and lyse any pathogens, sometimes killing them directly, and greatly enhances the effectiveness of Hydrogen Peroxide which finishes the job. The Sodium Percarbonate releases Active Oxygen Species that vigorously scrub the vessel walls and, crucially, sanitize the outside of the cyst shells.
  • The Solution to Residues: Unlike chlorine, these chemicals degrade into Water, Oxygen, and Carbonates. They dissipate naturally.
  • Why this is better: You achieve sanitization and shell-cleaning without leaving a toxic footprint. The byproduct (Oxygen) actually aids the hatching process.

⚠ Critical Note: Active oxygen can be harmful to sensitive organisms.

Magnetic Cysts: If using magnetic separation cysts (e.g., Sep-Art), you must do a test to check whether the Sodium Percarbonate affects the magnetic separation process.

Aquaculture: If using Chlorine or Virkon to sterilize the external shell, check for residuals before the next step.

Phase B

Probiotic Colonization (Neutralize & Colonize)

Objective: Dominate the water column with beneficial bacteria immediately.

  • Procedure (Neutralize): After 6–12 hours, after the oxidative reaction has subsided, drain the entire vessel through a 150–200 micron sieve to remove the dirty hatching water. This is the neutralization step — physically removing the waste.
  • Procedure (Colonize): Rinse the cysts back into the hatching vessel with water that has been aerated and already inoculated with Probiotics (this is your sterile biofloc). This removes waste, dead bacteria, and heavy metals that have now been removed from the outside cyst walls of the Artemia eggs/cysts.
  • The Issue with Standard Methods: Usually, probiotics are added too late or into toxic water. Pathogens on the cyst shells hatch alongside the Artemia and infect them immediately.
  • The IBHP Fix: By draining the dirty water from phase one, and adding clean, pre-inoculated water back to the vessel, we are adding probiotics to clean water with very little pathogen load. They colonize the surface of the cysts. As the Artemia hatch, they emerge into a “bath” of beneficial bacteria. The probiotics consume the metabolic waste (ammonia) from the hatching process, maintaining high water quality, and colonize the Artemia when they hatch.
Phase C

Separation

Objective: Separate live nauplii from waste shells without breaking the biosecurity chain.

  • Procedure: Once the hatch is complete, separate the nauplii from the shells.
    • Magnetic Separation: If using magnetic cysts, use the magnetic separator now.
    • Flotation: If using standard cysts, use the flotation method to separate shells.

⚠ Crucial Point: Do not sterilize the nauplii here. You have already sterilized the shells in Phase A and colonized the nauplii in Phase B. Sterilizing now is redundant and detrimental to the probiotic coating.

Phase D

Enrichment (Enrich)

Objective: Gut-loading and external protection.

Option A — The Hobbyist Path

Same Vessel

  • Return the separated, clean nauplii to the existing hatching vessel along with their current water (minus shells).
  • Top up with clean probiotic water if desired. Add enrichment media (Enrich-UM).
  • The Artemia are already colonized — no need for a clean slate.
Option B — The Aquaculture Path

Separate Vessel

  • Transfer the nauplii to a dedicated Enrichment Vessel.
  • Pre-fill with clean water + probiotics, must be aerated. Add enrichment media (Enrich-UM).
  • Frees up the hatcher for the next batch immediately.
Phase E

Setup of the Biofloc Reactor (Aquaculture Approach) [Pre-seeding]

Objective: Create a mature, vegetative bacterial colony prior to the nauplii being harvested and placed into the enrichment vessel.

  • Procedure: 12–24 hours before harvest, fill the sterile enrichment tank with sterilized seawater and add Microplex with strong aeration.
  • The Rationale: You want to make sure you are getting all beneficial bacteria and enzymes onto the outside of these animals and into their gut.

The “Best of Both Worlds”

  • ▸ Probiotics: Gut-load with probiotics + beneficial bacterial enzymes to seed gut flora.
  • ▸ Enrichment: Nutritional boost. Brine shrimp absorb their yolk sac energy quickly; breaking shells requires significant energy. Enrichment has been proven in peer-reviewed papers to significantly improve growth rates.

Operational Flexibility

  • ▸ Efficiency: One enrichment vessel can service three hatching vessels. Harvest multiple hatches and enrich them all in one go.
  • ▸ Salinity Control: Enrich in either Freshwater or Seawater. If you have freshwater fish, you can transfer nauplii to a freshwater enrichment vessel (or keep them in salt) depending on whether you want to introduce salt into your stock tanks.

The Result

A physically robust, nutritionally superior, and biosecure live food organism. Coated in powerful probiotics, in a way that effectively delivers them to your larvae for maximum benefit.

Sounds logical to me.

— Biotech Aquatica

Back to blog