Brand: JBL
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Healthy aquarium/healthy pond with conditions close to nature
The right water values are dependent on the fish stock and the plants in the aquarium/pond. Even if the water looks clear it can be contaminated. With bad values diseases or algae can appear in the aquarium/pond. To maintain a healthy aquarium/pond with conditions close to nature it is important to check and adapt the water values regularly.

For each water analysis JBL provides water tests in the form of quick tests or colour change tests. These determine a certain value or several values in one go. With these water tests you can recognise algae problems and negative nitrate, nitrite, potassium, magnesium values etc.

Why test?
In an aquarium, phosphate primarily enters the water as a result of the digestive processes of the fish or in the form of food remains. In ponds, phosphate primarily enters the water as a result of leaves and dying pond plants/algae. If conditions are unfavourable, the phosphate levels may reach values that are sometimes 100 times higher, and more, than natural levels. Undesirable algae will then multiply exponentially as an inevitable consequence.

Recommended phosphate values:
Freshwater aquarium (community aquarium): 0-0.4 mg/l
Lake Malawi/Lake Tanganyika aquarium: 0-0.4 mg/l
Plant aquarium with few fish (aquascaping): 0.1-1.5 mg/l
Marine aquarium: 0-0.1 mg/l
Pond: <0.05 mg/l.

You can analyse your measured water values in the JBL Online Laboratory free of charge and receive recommendations.

Where can I find the record sheets for the documentation of my water analysis?

Have you lost your record sheets, already filled them all in or do you need them in another language?
With the following links you can quickly and easily print out your new record sheets with recommendations for the individual parameters at home and document the water analyses.
deutsch: https://www.jbl.de/?lang=de&mod=files&func=show&id=11164
English: https://www.jbl.de/?lang=en&mod=files&func=show&id=11164
französisch: https://www.jbl.de/?lang=fr&mod=files&func=show&id=11164
niederländisch: https://www.jbl.de/?lang=nl&mod=files&func=show&id=11164

9789500 V05 PROAQUATEST Wasseranlayse PREVIEW.pdf

Which of the three scales on the colour cards symbolize of the water tests saltwater, freshwater and garden pond ?

koi carp = garden pond
angel fish = saltwater
discus = freshwater

I have lost my colour chart. Can I download the colour chart for the test?

The colour cards are not available for download on the JBL website. The absolutely accurate colour reproduction that is required can only be achieved using a printer which can be re-calibrated before each printout. Most privately used printers are not accurate enough for this.

You will find the colour chart bundle as a spare part on the respective product page and in the spare parts shop under: https://www.jbl.de/en/products/detail/8732/jbl-proaquatest-assortiment-color-chart

The instructions point out that the comparator block should be used to compare the colours. Can this be done without the comparator block as well ? Or is there a factor from this comparison that is required for the measurement ?

The colour charts are intended to be used with the comparator block. In addition, when the comparator block is used with the blank water sample, this compensates the inherent water colour.

Therefore, if the comparator block is not used, there will most likely be deviations in the readings.

Why does the JBL Phosphat Test sensitive contain such a small amount of Reagent 1 ?

Only a small measuring spoon (the narrow end of the enclosed double spoon) of Reagent 1 is required.

Show more FAQs ...

Which scale applies for my aquarium? My test has two or three control fields with fish and recommendations.

We repeatedly receive questions regarding the symbols on the water test. The hobby areas cannot be clearly assigned to the scales for analysis. There are three symbols to make the hobby areas on the colour charts clear:

Discus = fresh water
Emperor = salt water
Koi = garden pond

In the following, you will find a list which assigns the scale for analysing the results from measurements in the hobby area and explains the symbols: The scales are described from the top to the bottom here.

NO3: salt water, fresh water, garden pond
pH 6.0 – 7.6: fresh water, garden ponds
pH 7.4 – 9.0: salt water, fresh water, garden pond
Fe: fresh water, garden pond

The following JBL tests have a uniform scale for all 2 or 3 hobby areas for analysis of the results from the measurements, as differentiation is no longer necessary:

SiO2
Cu
NH4
NO2
PO4
pH 3-10
O2

What can I do when the measured value of a water test falls outside the scale?

If one of your measurements reaches the end of the colour chart scale you can multiply the scale by diluting later tests with distilled water (e.g. JBL Dest).

Here’s how to do it: dilute the sample with distilled water and carry out the test once more.

This works in detail as follows:
GH test: Instead of 5 ml use 10 ml aquarium water. Now 1 drop is equivalent to 0.5 dGH.
KH test: Instead of 5 ml use 10 ml aquarium water. Now 1 drop is equivalent to 0.5 dGH.

Note: when using 10 ml sample water the colour development is weaker with the first drops than with 5 ml sample water. Put the measuring container on a white underlay for a better readability.

NH4/NH3 ammonium/ammonia, NO2 nitrite, Fe iron and Cu copper:
2.5 ml sample + 2.5 ml dist. water: result times 2
1 ml sample + 4 ml dist. water: result times 5
0.5 ml sample + 4.5 ml dist. water: result times 10

NO3 nitrate, SiO2 silicate, PO4 phosphate sensitive and Mg magnesium freshwater:
5 ml sample + 5 ml dist. water: result x 2
2 ml sample + 8 ml dist. water: result x 5
1 ml sample + 9 ml dist. water: result x 10

PO4 phosphate koi high range:
2.5 ml sample + 2.5 ml dist. water: result x 2
1 ml sample + 4 ml dist. water: result x 5

K potassium:
7.5 ml sample + 7.5 ml dist. water: result x 2
3 ml sample + 12 ml dist. water: result x 5
1.5 ml sample + 13.5 ml dist. water: result x 10

K potassium in marine water:
1. Fill 10 ml of sample water with distilled water to 300 ml.
2. Follow the instructions for fresh water.
3. Multiply the test result by a factor of 30.

CO2 direct, Ca calcium and Mg+Ca magnesium+calcium: not required.

The phosphate test doesn't show any blue colouration, but instead shows a slightly yellowish colouration, which is not on the colour chart.

This is probably due to an error in use. The JBL Phosphate Test sensitive requires the following reagents:

1) 1 small level measuring spoon (narrow end of the enclosed double spoon) of reagent 1.
2) 10 drops of reagent 2.
3) Shake the sample lightly.
4) Allow 10 minutes for the colour to develop and then read the phosphate level using the comparator block.

It is important to use one small measuring spoon of Reagent 1 and not a large measuring spoon.

Do my water tests still work although they have been open for nine months?

Basically a sealed test keeps longer than an open one. How much the shelf life is reduced depends crucially on the handling and the storage conditions of the reagents. It may happen that a reagent in a test that has been open for 9 months doesn’t indicate correctly any more. However, additional information is needed to answer this question properly.

JBL TV #69 Algae in the aquarium - causes and solutions - Part 1

The first part is about successful algae control in the aquarium.

Animal species:	Arowana, Axolotl, Barbels, Bettas, Bichirs/reedfish, Blowfish, Catfish, Cichlids (South America), Corals, Crayfish, Danions, Discus, Dwarf shrimps, Flowerhorn, Gobies, Goldfish, Gouramis, Guppy, Juvenile fish, Killifish, Livebearers, Loaches, Mussels, Panchaxes, Rainbowfish, Snails, Spiny eels, Terrapins, Tetra, Tropical terrapin, Veiltails, Water turtles, freshwater butterflyfish
Animal size:	For all animal sizes
Animal age group:	All aquarium fish
Volume habitat:	50 tests
Material:	Reagent 1: ascorbic acid, sodium chloride. Reagent 2: sulphuric acid, ammonium molybdate, purified water
Colour:	white / transparent
Dosage:	Leave one small measuring spoon reagent 1 and 10 drops reagent 2 to stand for 10 minutes

Mercury:	No
Dimmable:	No

Mercury:	No
Dimmable:	No

Products & Shop

JBL PO4 Phosphate Test sensitive Quick test to determine the phosphate content in freshwater /marine water aquariums and in ponds

JBL PO4 Phosphate sensitive Test Set

Properties

Electronic label / illuminant

JBL PO4 Phosphate sensitive Reagent

Properties

Electronic label / illuminant

JBL TV #69 Algae in the aquarium - causes and solutions - Part 1

Misunderstandings – typical beginner mistakes

Preparations for the autumn - algae prevention

Time For A Change - Pros And Cons

How often do you need to test your pond or aquarium water?

ProPond: What pond care do you really need and what really works?

Pollen, The Algae Motor In The Pond

The Water Change In Ponds Is Important!

Testing Water in the Jungle

Plant Fertilisation with Optimised Consumption

Outline: Fertilisation in the Aquarium

Laboratory Comparator System to Compensate the Intrinsic Colour of the Water

Terraristik-Tierärzte informieren sich über JBL Wassertests

The JBL colour chart booklet now available

Der Phosphorkreislauf in natürlichen Gewässern

Algen und Phosphat - gibt es da wirklich einen Zusammenhang ?

JBL and aquarium keepers help save the environment

Pond laboratory / calculator

Water Analysis Online Laboratory

Filter material as troubleshooter

Plant growth

Reducing problematic water values

Diseases

Deficiency symptoms

Algae control

Marine water treatment

Testing water

Plant care

Daily care

Fish breeding in aquariums

Fertilising

Plant species

Marine water - the water

Water tests

Water values

Water treatment

Plants

CO2 plant fertilisation

The right filter material

The marine aquarium

Biotope (habitat) aquarium types

Jungle aquarium type JBL Rio Pantanal®

Rocky reef aquarium type JBL Malawi Rocks®

Goldfish aquarium type JBL Goldfish Paradise®

Water treatment

Fish care

The water tests – all parameters

Aquascaping aquarium type JBL Dreamscape®

Instructions

JBL PO4 Phosphat Test sensitiv

assortment Test Colour Charts

Testlab empty + inserts

component set for water tests

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safety information in accordance with GHS

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Hazard symbol

Risk phrase

safety note

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JBL PO4 Phosphate Test sensitive
Quick test to determine the phosphate content in freshwater /marine water aquariums and in ponds