06 / Aquaculture

Pathogen-free water.
No fish stress.
No chemical residue.

Industrial HOCl at 32,000 ppm, precisely diluted for RAS systems, hatcheries, net pens and processing facilities worldwide.

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0.5–2 ppm
Fish-safe use concentration
Log-6
Pathogen reduction, bacteria & protozoa
Zero
Chemical accumulation in water column

The molecule that breaks down to salt water, in your fish's water supply.

Aquaculture operations face a unique constraint that no other industry shares: the disinfectant must be effective enough to kill pathogens, but safe enough to stay in contact with live fish. HOCl is the only broad-spectrum biocide that meets both criteria at the same time.

At 0.5–2 ppm, our HOCl controls bacterial gill disease, Amoebic Gill Disease (AGD) precursors, biofilm accumulation in RAS pipework, and pathogens in incoming source water, without triggering stress responses, gill damage, or immune suppression in stock.

At 32,000 ppm concentrate, a single IBC provides months of treatment volume for even large-scale RAS facilities. The molecule degrades to salt and water, no accumulation in the water column, no bioaccumulation in fish tissue, no environmental residue at point of discharge.

Dilution Reference, Aquaculture

Application dilution rates from 32,000 ppm concentrate

RAS continuous dosing (fish-safe) 0.5–2 ppm Live fish
Hatchery incoming water treatment 5–10 ppm
Egg disinfection bath 20–50 ppm
Net & equipment soak 500–1,000 ppm
Processing facility surfaces 200 ppm
Fish transport water treatment 1–3 ppm

Deployment

Where it's deployed

From RAS biofilm control to hatchery water treatment, HOCl covers every hygiene touchpoint across the aquaculture production cycle.

RAS Water Treatment
Continuous dosing at 0.5–2 ppm controls bacterial loading, biofilm formation in pipework, and pathogen breakthrough, without disrupting biological filtration or stressing stock.
Hatchery Disinfection
Incoming source water treatment and egg bath disinfection. Eliminates IHN, VHS and bacterial pathogens at the entry point, before they reach broodstock or larvae.
Net & Equipment Soak
High-concentration soak at 500–1,000 ppm eliminates sea lice ova, algae fouling and bacterial biofilm from nets, cages and handling equipment between cycles.
Gill Disease Prevention
AGD precursor control and bacterial gill disease management at sub-irritant concentrations. HOCl treats without causing the secondary gill lesions associated with formalin or hydrogen peroxide.
Processing Facility Sanitation
Filleting tables, conveyor belts, knives and cold stores. No-rinse at food-contact concentrations. Validated against Listeria monocytogenes and Vibrio species common to seafood processing.
Fish Transport Water
Continuous dosing in live fish transport tanks at 1–3 ppm maintains water quality, suppresses stress-induced bacterial blooms and reduces mortality during long-haul transfers.

Technical

Specification at a glance

Every parameter verified per batch. COA supplied with every shipment. Tolerances held to ±5% on free available chlorine.

Parameter Value Note
Free available chlorine (FAC) 32,000 ppm Concentrate; verified by DPD titration per batch
pH 5.0–6.5 Optimal HOCl dominance, >80% undissociated fraction
ORP (Oxidation-Reduction Potential) >1,000 mV At concentrate; indicates full biocidal activity
Fish-safe in-water concentration 0.5–2 ppm Validated with salmonid and marine species; no gill damage
Egg disinfection bath 20–50 ppm 15–30 min contact; IHN, VHS and bacterial pathogens
Processing surface use dilution 200 ppm Filleting, conveyor and cold store, Listeria, Vibrio
Breakdown product NaCl + H₂O No accumulation in water column; discharge-safe at use dilutions
Shelf life (sealed, cool & dark) 18 months Tested to 5% FAC degradation at 18 months unopened

Comparison

What it replaces

The three chemicals most commonly displaced when aquaculture operators switch to HOCl and why they're switching.

Formalin
Problem
Classified as a probable human carcinogen. Strict occupational exposure limits make routine handling hazardous. Increasingly restricted by regulators across the EU and major aquaculture markets. Withdrawal period requirements complicate harvest scheduling.
HOCl advantage
No carcinogen classification. No withdrawal period. No restricted-use permit required. Safe for handlers without respiratory PPE. Equivalent or superior efficacy against the same gill pathogens at a fraction of the regulatory burden.
Hydrogen Peroxide (H₂O₂)
Problem
Bath treatment at therapeutic concentrations (1,500–1,800 ppm) causes oxidative gill stress in fish, particularly juveniles and stressed stock. Narrow safety margin between efficacy and sub-lethal toxicity. Significant handling hazard at storage concentrations (35–50%).
HOCl advantage
Effective at 0.5–2 ppm continuous dosing, three orders of magnitude lower concentration. No oxidative stress mechanism. No handling hazard at concentrate beyond standard gloves. Continuous treatment rather than bath-and-remove protocol.
Chloramine-T
Problem
Slow acting, requires extended contact times for effective bacterial gill disease control. Degrades rapidly in the presence of organic matter typical of aquaculture environments. Residue concerns in processing facilities and environmental discharge restrictions in several jurisdictions.
HOCl advantage
30-second contact time across all major gill pathogens. Maintains activity in moderate organic loading. Degrades completely to salt water, no residue concern in processing environments or at discharge points into coastal waters.

Aquaculture, Next step

Ready to validate in your hatchery or RAS facility?

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