Proven Microbial Solutions for Aquaculture & RAS
Microbes play a crucial role in aquaculture by enhancing the health and productivity of farm aquatic animals. They can be used to improve growth through maintenance of optimum water quality, immunity and disease resistance.
Nothing is left to chance, as Pure Aquatics have teamed up with Micronovo Technologies who’s qualified microbiologists, produce all our bacterial products in their laboratory to provide super highly concentrated live bacterial products right here in Australia.
We have two product blends (NMI+™ and Micro+™), each contain specifically chosen species for the task at hand. Whether it be NMI+ for your biological filter, or Micro+ for waste assimilation and disease competition, each strain is carefully grown separately, checked for abundance, then blended and packed into sealed aseptic containers. Growing conditions are key to ensure that they grow just at the right pack, so that they can be acclimatised to ensure the live culture remains alive and stable during its shelf life. No shortcuts taken, consistent product, consistent results.
Nitrifying Bacteria
NMI+ The Ultimate Biofiltration Bacteria Blend
The Complete Biological Tool Kit: Whether you are starting a new system, recovering after disruption, or pushing higher biomass and feed rates, Fresh or Marine applications, NMI+ is the key to nitrogen management.
Modern aquaculture systems rely on more than just individual additives—they depend on a balanced and well-supported biological ecosystem. At the core of this approach is NMI+, which establishes and maintains the nitrification process that converts toxic ammonia and nitrite into nitrate. Adding NMI+ ensures the right strains are present, building that population to accelerate systems capacity prior to introducing your stock. Thus providing a more stable environment at start-up, stabilises water quality, reduces start up stresses for you and your stock whilst improving long term performance.
The Pure Aquatics NMI+ biological filtration blend supports every stage of nitrogen processing and microbial stability. NMI+ even converts Nitrate to Nitrogen, taking that biological step one step further than anything else on the market.
You can simply add NMI+ to your existing system to boost your biofilters capacity safely with fish present. Whether you’re adding to a new filter with fish present and ramping up your fish biomass progressively, or by cycling the filter fishless, adding NMI+ is the key. When pairing with Bloom, Ammonium Chloride and Sodium Nitrite, work together to support reliable nitrification and microbial balance. So biofilters can be commissioned, tested, and balanced in a controlled, fishless environment—allowing operators to build and verify biological capacity before stocking or increasing feed loads.
Bloom enhances this process by supplying the essential nutrients and trace elements microbes need to grow efficiently, reducing cycling time and strengthening biofilter resilience. Just dose once along with NMI+.
Then add Sodium Nitrite (also one-off dose) and Ammonium Chloride (at an incrementally increasing dose rate) to mimic fish nutrients artificially via a controlled nitrogen source. This combination seeds your microbiological water purification system, enabling robust removal of toxic nitrogen compounds when your valuable stock is introduced.
NMI+ | Nitrifying Microbial Isolates
Available in:
1 litre (code: NMI+1000) bottle
500 ml (code: NMI+500) bottle
125 ml (code: NMI+125) bottle
NMI+ | Nitrifying Microbial Isolates
The foundation of effective biofiltration
NMI+ contains high-performance nitrifying bacteria that convert toxic ammonia and nitrite into nitrate—forming the backbone of safe and stable aquaculture systems. It is trusted for new system start-ups, biofilter recovery, and increased production loads.
Key benefits:
Rapid biofilter start-up and commissioning
Reduced ammonia and nitrite spikes
Improved system resilience during expansion or recovery
Pair with:
- Bloom to accelerate microbial establishment
- Ammonium Chloride for fishless cycling
- Sodium Nitrite to strengthen nitrite conversion
Primary Uses:
Biofilter start-up and commissioning
Fishless cycling
Biofilter recovery after cleaning, power outages, or treatments
Increasing feed rates or biomass
Typical Application
Dose directly into biofilters or high-flow areas
Can be used in freshwater and marine systems
Indicative Dosage
Start-up / Cycling:
Dose according to system volume and biofilter size (commonly applied as an initial seeding dose, followed by repeat doses during early cycling).General Dose Rate – 1ml/100L System Water
Recovery / Maintenance:
Lower repeat doses following disruption or increased load.
Exact dosing depends on system design, temperature, salinity, and loading. Contact Pure Aquatics for Technical guidance on your specific application.
Best Practice
Dissolved oxygen > 5 mg/L
pH ideally 7.2–8.2
Disable UV and ozone during initial colonisation (24–72 hours)
Maintain adequate alkalinity – (Note that this can be the most under rated aspect of biological filter start up). Alkalinity (kH) is required for the microbes for the biological assimilation and thus breakdown of Ammonia to Nitrite to Nitrate. Without a base level of alkalinity, you will SIGNIFICANTLY impact the growth and development of your biofilter microbe population proliferation.
Best used with:
Ammonium Chloride, Sodium Nitrite, Bloom, Carbonate Hardness Increaser – (kH) Generator
Bloom | Microbial Nutrient, Mineral & Trace Element Solution
Fuel beneficial bacteria for faster results
Bloom provides the essential nutrients and trace elements required for microbial growth and metabolism. It helps beneficial bacteria establish faster and perform more efficiently during cycling and ongoing operation.
Ideal for:
Biofilter start-up and conditioning
Supporting nitrification and microbial activity
Enhancing overall biological stability
Primary Uses
- For initial biofilter start-up and conditioning
Typical Application
Single Dose Only, directly to system water along with microbial inoculation
Suitable for freshwater and marine systems
Indicative Dosage
Start-up / Cycling:
Small, regular doses during early system establishment
Best used with:
NMI+, Ammonium Chloride, Sodium Nitrite, Carbonate Hardness Increaser – (kH) Generator
Bloom | Microbial Nutrient, Mineral & Trace Element Solution
Available in:
1 litre (code: BLOOM1L) bottle
500 ml (code: BLOOM500ml) bottle
125 ml (code:BLOOM125ml) bottle
Ammonium Chloride
Available in:
1 kg (code: AMCHLOR-1KG)
5 kg (code: AMCHLOR-5KG)
10 kg (code: AMCHLOR-10KG)
20 kg (code: AMCHLOR-20KG)
Ammonium Chloride
Controlled ammonia for safe, fishless cycling
Ammonium Chloride supplies a clean, measurable ammonia source—allowing biofilters to be commissioned without risking livestock. This controlled approach delivers predictable, repeatable results.
Ideal for:
Fishless cycling
Biofilter capacity testing
Commissioning new or upgraded systems
Typical Application
Dissolve fully before adding to system water
Dose incrementally, allowing full conversion before re-dosing
Indicative Dosage
Target low, controlled TAN levels (commonly 1–2 mg/L during cycling)
Re-dose only once ammonia and nitrite are being efficiently converted
Important Notes
Best used without fish present
Monitor ammonia and nitrite closely
Maintain strong aeration
Critical Safety Information
- Ammonia Chloride is toxic to aquatic livestock at high enough quantities
- Not intended for routine use in stocked systems
- Use only with appropriate expertise
- Maintain buffering capacity (alkalinity (kH) above 60ppm)
Best used with:
NMI+, Bloom, Sodium Nitrite and Carbonate Hardness Increaser – (kH) Generator
Sodium Nitrite
Targeted support for complete nitrification
Sodium Nitrite is a specialist tool used to strengthen nitrite-oxidising bacteria and confirm full nitrification capacity. It is primarily used during commissioning, diagnostics, or biofilter recovery in fishless or expert-managed systems.
Used for:
Balancing nitrification
Preventing nitrite stalls
Confirming biofilter readiness
Typical Application
Fishless systems preferred
Very small, measured doses only
Continuous monitoring required
Indicative Dosage
- Applied typically as a one-off dose at inoculation with NMI+. Applied at a low concentration 1-3ppm for controlled nitrite loading
- If following up with ammonia chloride incremental dosing, it is unlikely you will need to a follow up dose of sodium nitrite
Critical Safety Information
- Nitrite is toxic to aquatic livestock at high enough quantities
- Not intended for routine use in stocked systems
- Use only with appropriate expertise
Best used with:
NMI+, Bloom, Ammonium Chloride and Carbonate Hardness Increaser – (kH) Generator
Sodium Nitrite
Available in:
100 mg (code: SONITR9825-100gm)
500 mg (code: SONITR9825-500gm)
1 kg (code: SONITR9825-1kg)
Carbonate Hardness Increaser - (kH) Generator
Targeted Alkalinity & pH Stability for Aquaculture Systems
Targeted support for maintaining stable pH levels
Pure Aquatics Carbonate Hardness Increaser – (kH) Generator is a high-quality powdered buffering agent formulated to support stable, resilient pH conditions in aquatic life support systems. It provides a balanced spectrum of carbonates and bicarbonates to adjust and maintain alkalinity (kH), helping prevent pH crashes and fluctuations that can stress livestock and impair system performance.
By optimising carbonate hardness, kH Generator plays a critical role in maintaining water chemistry stability and supporting efficient biological filtration.
Key Benefits
- Maintains Stable pH – Adjusts carbonate hardness (kH) to buffer against rapid pH changes
- Optimises Water Chemistry – Creates a more resilient aquatic environment for livestock
- Supports Biofilter Performance – Essential for biofilter conditioning, nitrification efficiency, and long-term biological stability
- Fast Acting & Easy to Use – Powdered format allows precise dosing and rapid system integration
- Professional Grade – Suitable for commercial aquaculture, RAS, aquaponics, and advanced aquatic systems
How It Works
Carbonate Hardness Increaser – (kH) Generator provides the buffering capacity that protects aquatic systems from acidification caused by biological processes such as nitrification. Over time, alkalinity is consumed, leading to declining pH and reduced biofilter efficiency.
Pure Aquatics Carbonate Hardness Increaser – (kH) Generator replenishes essential carbonates and bicarbonates, restoring alkalinity levels and ensuring consistent pH conditions that promote livestock health and optimal biofilter performance.
Typical Applications
- All aquatic life support systems
- Recirculating Aquaculture Systems (RAS)
- Aquaculture tanks and ponds
- Aquaponic systems
- Systems requiring controlled pH and alkalinity management
Function:
- Raises and balances pH
- Maintains healthy, stable carbonate hardness (kH)
Indicative Dosage & Use Instructions
Dose Rate: 4 g per 100 L of system water increases alkalinity by approximately 20 ppm
Monitoring: Always monitor both pH and kH during adjustments
Mixing Instructions:
- Slowly add the powder to a bucket or container of water (best practice: add powder to water, not water to powder)
- Mix thoroughly until dissolved
- Introduce the solution into an area of high water flow for even distribution
Avoid rapid changes to alkalinity. Gradual adjustments are recommended to maintain system stability and livestock health.
Best used with:
NMI+, Bloom, Ammonium Chloride and Sodium Nitrite
Carbonate Hardness Increaser – (kH) Generator | Alkalinity Generator
Available in:
5 kg (code: PA-ALKGEN5kg)
10 kg (code: PA-ALKGEN)
20 kg (code: PA-ALKGEN20)
Probiotic Bacteria
Probiotic Microbial MNI+
FOR COMPETIVITE MIRCOBIAL DEFENCE AND WASTE WATER ASSIMILATION
Good microbes play a crucial role throughout aquatic systems, by enhancing the health and well-being and farming productivity of aquatic animals. They can be used to improve growth, boost immunity and control pathogens. These good microbes achieve this by: removing fish waste products; outcompeting pathogens for nutrients and stabilising the microbial ecosystem.
Micro+ aquaculture probiotic bacteria is a blend of diverse species of probiotic bacteria chosen for broad-spectrum effectiveness across fish species, diseases and biological remediation of aquatic environments for pristine water quality.
These carefully selected bacterial strains are individually, laboratory grown under axenic conditions, then blended together to ensure you get high concentrations of each pure strain and the most stable and robust culture blend available. This is critical as each aquaculture system is different. Once introduced, a subset of Micro+ strains proliferate in your tanks whilst others decline. However, if the strains were grown together, this would have happened before you used Micro+ … and the strains you needed may have already been suppressed! We therefore strongly recommend against cheap probiotic mixes that are grown as a mix – they may work if your water happens to mimic the conditions they were grown under, but that’s a big risk.
Long-term system stability is supported through Micro+ and Micro+ Marine, which introduce beneficial probiotic microbes to help break down organic waste, suppress harmful bacteria, and maintain a balanced microbial environment.
Micro+ | Pro-biotic Microbial Isolates
Available in:
1 litre (code: Micro+1000ml)
500 ml (code: Micro+500) bottle
125 ml (code: Micro+125) bottle
Micro+
Pro-biotic Microbial Isolates Freshwater
Improve water quality and microbial balance
Micro+ introduces beneficial probiotic microbes that help break down organic waste, suppress harmful bacteria, and stabilise microbial ecology in freshwater systems.
Ideal for:
Ponds and RAS
Hatcheries and nurseries
Aquaponics and biofloc systems
Improve Freshwater System Stability
Primary Uses
Ongoing water quality management
Organic waste reduction
Microbial balance and disease pressure support
Typical Application
Dose directly to system water
Bloom out option for large water bodies (Contact Pure Aquatics for further details)
Can be used regularly as part of biological maintenance
Indicative Dosage
Start-up or Recovery:
Higher initial doses to establish populations- Higher initial doses to establish populations
- RAS & Hatchery – 0.5ml/100L System Water
- Pond – 0.5-1ml per 1000L Pond Water
- Regular doses to maintain optimal bacteriophages population at sufficient concentrations when treating disease
Maintenance:
Regular lower doses based on system load and maintenance of water quality
Best Practice
Maintain good aeration
Avoid simultaneous use with harsh disinfectants
Micro+ Marine
Pro-biotic Microbial Isolates Saltwater
Marine-adapted probiotics for saltwater systems
Formulated specifically for marine salinities, Micro+ Marine supports organic breakdown, nutrient cycling, and microbial balance in saltwater RAS, hatcheries, and holding systems.
Ideal for:
Marine RAS and hatcheries
Live seafood holding systems
Ongoing water quality and stress support
Support Marine System Performance
Primary Uses
Marine RAS and hatcheries
Live seafood holding systems
Ongoing microbial stability and stress support
Typical Application
Dose directly to marine system water
Bloom out option for large water bodies (Contact Pure Aquatics for further details)
Indicative Dosage
- Start-up / Recovery:
- Higher initial doses to establish populations
- RAS & Hatchery – 0.5ml/100L System Water
- Pond – 0.5-1ml per 1000L Pond Water
- Regular doses to maintain optimal bacteriophages population at sufficient concentrations when treating disease
Maintenance:
Regular lower doses based on system load and maintenance of water quality
Best Practice
Maintain good aeration
- Avoid simultaneous use with harsh disinfectants
Micro+ Marine | Pro-biotic Microbial Isolates
Available in:
1 litre (code: Micro+MARINE 1000)
500 ml (code: Micro+MARINE 500) bottle
125 ml (code: Micro+MARINE 125) bottle
-
Carbonate Hardness Increaser – (kH) Generator
Price range: $73.00 through $235.00 Select options This product has multiple variants. The options may be chosen on the product page -
Sodium Nitrite (NaNO2)
Price range: $5.00 through $29.00 Select options This product has multiple variants. The options may be chosen on the product page -
Ammonium Chloride (NH4Cl)
Price range: $18.00 through $330.00 Select options This product has multiple variants. The options may be chosen on the product page -
Bloom | Microbial Nutrient, Mineral & Trace Element Solution
Price range: $6.75 through $19.50 Select options This product has multiple variants. The options may be chosen on the product page -
NMI+ | Nitrifying Microbial Isolates
Price range: $85.80 through $532.95 Select options This product has multiple variants. The options may be chosen on the product page
Contact Us Today
"*" indicates required fields
Contact Information
- ABN: 15 623 724 149
