Nitrification support
Selected nitrifying organisms support the conversion of reduced nitrogen compounds as part of the established aquarium or aquaculture nitrogen cycle.
MICROPLEX - Aquatic Probiotic Powder
MICROPLEX - Aquatic Probiotic Powder
Biological water quality
MICROPLEX
A professional multi-strain biological water-conditioner powder for supporting biological cycling, organic-waste processing and stable water quality in freshwater and marine systems.
24strains
5 × 10¹⁰CFU/g
FW & SWcompatible
Microbial blend24 strains for biological water-quality supportProfessional grade
✓ 24 strains✓ 5 × 10¹⁰ CFU/g✓ Freshwater and marine systems✓ Powdered formulation
Aquatic systems depend on a working microbiome. Microplex is formulated to add a broad microbial consortium that supports biological cycling and the processing of organic material alongside normal filtration, water testing and maintenance.
The consortium
Multiple roles. One blend.
Organic processing
Heterotrophic organisms and their enzyme activity support the biological processing of organic material, including detritus and uneaten feed.
Filter colonisation
When used with suitable media, oxygenation and flow, a diverse inoculum can support microbial establishment across biological filter surfaces.
Microbial diversity
A multi-strain formulation provides several biological pathways rather than relying on one organism or one single mode of activity.
Planted-system support
Microplex can be considered as part of a wider planted-system maintenance program, alongside appropriate lighting, feeding and nutrient management.
Freshwater and marine
Suitable for freshwater and marine aquatic systems. Monitor water chemistry and follow package directions.
Core functionality
Built for biological support
Broad inoculum
A 25-strain blend supplies a wider biological starting point than a single-organism product.
Concentrated powder
The verified specification lists a total viable count of 5 × 10¹⁰ CFU/g.
Routine maintenance
Use as part of a consistent maintenance schedule rather than relying on a single application to correct poor water quality.
Metabolites and water quality
What the organisms contribute
Mineral mobilisationsilicate and mineral-substrate processing
Bioflocculantpolymer-associated aggregation activity
Organic breakdownstrong enzyme and complex-substrate focus
Phosphate solubilisationphosphate mobilisation from suitable mineral substrates
| Strain or blend entry | Reported metabolites and enzyme activity | Water-quality process |
|---|---|---|
| Aspergillus nigerOrganic breakdownPhosphate solubilisation | Organic acids, including citric and gluconic acids; hydrolytic enzymes | Organic-material breakdown and phosphate mobilisation within established biological processes |
| Aspergillus oryzae | Kojic acid; amylases and proteases | Starch and protein processing; supports conversion of dissolved and particulate organic material |
| Bacillus amyloliquefaciensPhosphate solubilisation | Surfactin, fengycin, iturin and bacillomycin; proteases, amylases and lipases | Organic-load processing, biofilm-associated activity and nutrient cycling |
| Bacillus aryabhattai | Indole-3-acetic acid and siderophores; amylase and cellulase activity | Processing of starch- and cellulose-containing organic material |
| Bacillus coagulansOrganic breakdown | Lactic acid and hydrolytic enzymes | Carbohydrate fermentation and organic-material processing in lower-oxygen zones |
| Bacillus firmus | Protease, xylanase and urease activity | Organic-material processing and nitrate-cycle support under suitable conditions |
| Bacillus laterosporus | Laterosporamine and polyketide compounds; protease and chitinase | Chitin- and protein-containing waste processing |
| Bacillus licheniformisOrganic breakdown | Bacitracin and lichenysin; proteases, amylases and lipases | Organic-nitrogen processing, biofilm-associated activity and nutrient cycling |
| Bacillus megateriumPhosphate solubilisation | PHB and organic-acid-associated activity; amylase, protease, phytase and cellulase | Carbohydrate and protein processing with phosphate mobilisation from suitable mineral substrates |
| Bacillus methylotrophicus | Surfactin, fengycin, iturin and IAA; amylase, protease, cellulase and lipase | Nitrogen and phosphate-cycle support with organic-substrate processing |
| Bacillus mucilaginosusMineral mobilisationPhosphate solubilisation | Citric and oxalic acids; exopolysaccharides | Mineral mobilisation, including silicate-associated mineral processing, and biofilm-associated processing of organic substrates |
| Bacillus nattoBioflocculant | Poly-γ-glutamic acid, nattokinase and vitamin K₂; proteases and amylases | Bioflocculation and processing of protein- and starch-containing organic material |
| Bacillus pumilus | Pumilacidin and siderophores; amylase, protease, cellulase and lipase | Organic-load processing, biofilm-associated activity and nutrient cycling |
| Bacillus subtilisOrganic breakdown | Surfactin, fengycin, iturin, polymyxin and subtilin; proteases, amylases, lipases and chitinase | Organic-material processing and established nitrogen/phosphate-cycle support |
| Bacillus velezensis | Surfactin, fengycin and iturin; proteases, amylases, lipases and cellulases | Organic-load processing and biofilm-associated nutrient cycling |
| Bdellovibrio bacteriovorus | Hydrolytic enzymes, including proteases and lipases | Biological community-balance activity involving Gram-negative bacterial populations |
| Cold-Water Bacillus | Cold-active proteases, amylases, lipases and cellulases | Organic-material processing in cooler systems |
| Marine Rhodotorula | Astaxanthin, carotenoids and B-vitamins; lipase and protease activity | Marine organic-substrate processing and nutrient cycling |
| Nitrosomonas + Nitrobacter (one mix; 2 strains) | Ammonia monooxygenase, hydroxylamine oxidoreductase and nitrite oxidoreductase; nitrite and nitrate are pathway products | Nitrosomonas oxidises ammonia to nitrite; Nitrobacter oxidises nitrite to nitrate as sequential nitrification steps |
| Paenibacillus polymyxaPhosphate solubilisation | Polymyxin, paenibacillin and fusaricidin; amylase, protease, cellulase, lipase and xylanase | Nitrogen and phosphate-cycle support with cellulose and organic-material processing |
| Rhodopseudomonas palustris | 5-aminolevulinic acid, carotenoids and PHB; nitrogenase and carbon-processing enzymes | Assimilatory and dissimilatory nitrogen-cycle support and phosphate assimilation |
| Streptomyces hydrogenansOrganic breakdown | Complex secondary metabolites; cellulases, xylanases, chitinases and proteases | Processing of sludge, lignin, cellulose, chitin and other complex organic material |
| Streptomyces microflavusOrganic breakdown | Protease, amylase and lipase activity; chromomycins and other bioactive metabolites | Complex-organic-matter processing and water-quality support |
Product specification
Blend overview
| Specification | Verified detail | Application context |
|---|---|---|
| Product type | Multi-strain aquatic biological water-conditioner powder | Biological water-quality support |
| Strain count | 24 strains | 24 biological strains; 23 blend entries, including one two-strain nitrifying mix |
| Total viable count | 5 × 10¹⁰ CFU/g | Declared total blend potency |
| System formats | Freshwater and marine | Use according to current label directions |
| Product boundary | Biological supplement | Does not replace filtration, testing or maintenance |
Connections and options
Use it with the system
Biological media
Provide clean, oxygenated media and stable flow so microbial populations have suitable surfaces to establish.
Water testing
Continue testing ammonia, nitrite, nitrate, pH and other system-specific parameters after application.
System maintenance
Keep feeding, cleaning, water changes and stocking decisions appropriate to the actual biological capacity of the system.
Application and Cliq-dose
Microplex dose reference
| Target concentration | Microplex powder per 1,000 L | Cliq-dose rate | Approx. clicks | Original Microplex guide |
|---|---|---|---|---|
| 5,000 CFU/ml | 0.1 g | 1 cliq per 500 L | 2 per 1,000 L | — |
| 10,000 CFU/ml | 0.2 g | 1 cliq per 250 L | 4 per 1,000 L | — |
| 50,000 CFU/ml | 1 g | 1 cliq per 50 L | 20 per 1,000 L | — |
| 100,000 CFU/ml | 2 g | 1 cliq per 25 L | 40 per 1,000 L | 1 g/500 L established; 1 g/350 L new or heavy |
Product use-rate context: The current Microplex guide also lists 1 g per 500 L for established systems and 1 g per 350 L for new tanks or heavy bioloads. Follow the current package label and directions for use. Fish food, different food sizes and other products require separate calibration.
Make dosing easier with Cliq-dose
Feed dry fish food consistently and dose measured probiotic powders with a dedicated click dispenser.
Cross-sell and support
Build the biology
Microbial product range
Explore the wider bacteria, microbes and bioremediation range for biological water conditioners, nutrient products and biofilter support equipment.
View microbial rangeNeed a system recommendation?
Send through your system type, volume, temperature, livestock and current water-test results so the team can recommend the appropriate support pathway.
Contact the teamCliq-dose precision feeder and dispenser
Use Cliq-dose for repeatable dry fish-food portions and product-specific powder dosing. For the measured Microplex, PMX-8 and SUB-6 probiotic powders, one cliq is approximately 0.05 g: Microplex 1 cliq per 25 litres, PMX-8 1 cliq per 50 litres and SUB-6 1 cliq per 80 litres. Fish food and other products require their own calibration.
View Cliq-doseWhat's included
What arrives in the pack
Microplex powder
Multi-strain aquatic biological water-conditioner powder supplied in the selected product size.
Current label directions
Follow the application rate, storage requirements and warnings printed on the current package.
Advanced support
For more complex systems
Production and RAS programs
For hatcheries, aquaculture systems and RAS operations, consider the full water-quality plan: oxygen transfer, solids management, biofilter design, monitoring and documented operating procedures.
Technical review
Trade customers can contact BTA for product selection and technical discussion before introducing a biological supplement into a production system.
Product status
Biological support product
Microplex is a biological support product for aquatic systems. It is not a veterinary chemical product and is not intended to prevent, treat or cure disease. Information on this page is provided for product-description purposes only and does not constitute a claim of pest or disease control. Follow the current package label and directions for use, and seek qualified fish-health advice for disease concerns.
Frequently asked questions
Microplex questions
What is Microplex?
Microplex is a multi-strain biological water-conditioner powder intended to support biological cycling and water-quality management in freshwater and marine systems.
How many strains and what viable count are listed?
Microplex is listed with 24 strains and a total viable count of 5 × 10¹⁰ CFU/g. Follow the current package directions.
Can it replace my filter or water testing?
No. A microbial supplement does not replace suitable filtration, aeration, water testing, quarantine, water changes or responsible stocking and feeding practices.
Can it be used in freshwater and marine systems?
Microplex is suitable for freshwater and marine systems. Use package directions and monitor the system after application.
How should it be stored?
Follow the storage instructions on the current label. Keep the product sealed and protected from unsuitable heat and moisture.
Not sure which support your system needs?
Send us the system type, water volume, livestock, temperature and recent water-test results. We can help you work through the biological support options.
Contact our teamBrowse all productsTrade and wholesale
Running an aquarium retail operation, hatchery, aquaculture farm or production system? Contact BTA to discuss trade supply, technical support and suitable biological-product programs.
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