Large Pond Profile

A well-founded assessment of fish water is only possible when microbiological and physical/chemical analyses are considered together. Both types of analysis answer different but closely interconnected questions—and are therefore complementary, not interchangeable.

All Information at a Glance

A meaningful assessment of fish water is only possible through the combination of both types of analysis. While the physical/chemical examination describes the environmental conditions of the habitat, the microbiological analysis reveals biological risks and dynamics. Only together do they create a realistic overall picture of ecological balance.

500 ml of the water to be tested

The sample container—a plastic (PET) water bottle is well suited—should not be pre-cleaned with detergent. Before sampling, it is recommended to rinse the sample container several times with the water sample to be tested. Submerge the container completely underwater with the opening facing down and turn it until all air has escaped. Seal the container while underwater.

Collect the water sample at a time that avoids unnecessary standing times; the same applies to postal delivery (express shipping)!

The less time between sampling and analysis, the more accurately the result reflects the actual condition of the water.

3-4 days from receipt

The microorganisms are cultured for 3 days on appropriate selective culture media according to European standards and then counted.

€92.00 (incl. VAT) per water analysis

Habitat Quality vs. Disease Risk

  • Physical/chemical
    shows whether basic environmental conditions such as pH value, nitrogen compounds, hardness, and conductivity are within tolerable ranges.
  • Microbiological
    shows whether there is increased microbial pressure or potentially pathogenic bacteria present.

“Good water parameters” do not automatically mean low disease risk.

Understanding Stress Factors and Infection Pressure
Chemical deviations cause physiological stress. Microbiological loads determine whether and which infections become likely. Only together do they explain why fish become ill or die despite apparently stable parameters.

Early Warning System with Greater Significance
Microbiological changes often occur earlier than chemical limit exceedances. Chemical trends indicate structural system overload. The combination enables preventive intervention before clinical symptoms become visible.

Avoiding Misassessments
Chemistry only: Diseases remain unexplained → “But the parameters are good”.
Microbiology only: Microbial detection without context → Overestimation.
Both measures together provide an appropriate assessment.

Basis for Targeted Management
Adjustments to feeding, stocking, water changes, and filter technology are made based on data. Reduction of unnecessary treatments lowers costs, stress, and resistance risks.

Standard for Professional Fish Keeping
In fish farms, breeding facilities, quarantine systems, and koi ponds, combined analysis is considered best practice. It improves animal welfare, biosecurity, and planning reliability.

Test Parameters

  • Total viable count, quantity of viable bacteria as a central indicator of hygiene status

  • Enterobacteria, Aeromonas, and Pseudomonas, indicator organisms as colony-forming units per ml of water (CFU/ml)

  • pH value and conductivity, central control and early warning parameters

  • Total hardness, carbonate hardness, ammonium, nitrate, nitrite, phosphate, foundation for stable pond management

Two ways to DNA analysis – choose what suits you best

Order – Digital

  • Recommended for fast online processing

The fast and cost-effective way: Order your DNA analysis online and receive the results conveniently as a digital certificate in your own archive. Transparent, efficient, and accessible at any time, wherever you are.

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Order – Paper form

  • Recommended for classic documentation

The classic way to DNA analysis: Submit your samples with an order form and receive the results as an official certificate in paper form. Ideal for those who value printed documentation.

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