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

In addition to a sufficient CO2 supply, iron and trace elements are essential for water plants. Strongly growing aquatic plants permanently need iron and other trace elements, and these are only durable for a limited period during the coupling to so-called chelates, a common feature in modern fertiliser preparations (e.g. JBL Ferropol, JBL Fe +Microelements), so regular monitoring with the JBL Iron Test Fe is needed, along with repeated fertilisation if necessary. Pond owners should check their well water for iron before using it for their pond. Too high iron content can lead to problems in the pond.

JBL Online Laboratory
Regular control for a healthy aquarium with conditions close to nature. Enter your water values into the JBL Online Laboratory and get an in-depth analysis of your values within seconds.

Recommended iron contents:
Freshwater aquarium (community aquarium): 0.05-0.2 mg/l
Lake Malawi/Lake Tanganyika aquarium: 0.05-0.2 mg/l
Plant aquarium with few fish (aquascaping): 0.1-0.5 mg/l
Marine aquarium: 0.002-0.05 mg/l
Pond: 0.05-0.1 mg/l.

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.

Can the refill reagent of the JBL iron test Fe (with imprint of 5 drops) be used with an old colour chart for 3 drops/5ml, or does this lead to incorrect measuring values?

This will lead to incorrect results. Please use the current version of the colour card which is attached to the JBL iron test Fe.

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 is the shelf life of the JBL Iron Test ?

The JBL iron test has a shelf life of 2 years in the original sealed bottle.

The following is printed on the bottom of the packaging:

CH/B: 2255 (e.g.) = batch number
BBD: 05/12 (e.g.) = best-before date (month/year)

Please note that the best-before date does not apply for opened reagents. Exposure to atmospheric oxygen decreases the shelf life.

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 iron test doesn’t indicate iron, even after using an iron fertilizer.

The JBL iron test indicates bivalent, trivalent iron and chelated iron.

Please check whether the fertilization with JBL Ferropol was sufficiently dosed. Increase the dosage if necessary.

It should be noted that the application of UV-C water clarifiers can destroy the chelators. In such cases we recommend switching over to a daily - and possibly increased - dosage.

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.

When I test my tank water, the Fe test (iron test) shows a slightly "yellow" discolouration. By no means a colour from the colour chart (light pink to violet).

The slightly yellow discolouration indicates that the reagent of the JBL Fe Test is no longer good. As a result, you can expect to have erroneous results when the discolouration is weak. Of course, if there has been a significant overdose of fertiliser, the test will still show iron, but the values can no longer be assigned to a colour on the scale.

Misunderstandings – typical beginner mistakes

Based on our own experience in customer service and the many messages and questions we receive, we have put together the typical mistakes beginners may make. The experienced aquarist might well smile, but if they are honest, these are mistakes we all made at the start, aren’t they?

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:	Ammonium thioglycolate, ascorbic acid, sodium acetate, ferrozine, purified water
Colour:	yellow
Dosage:	5 ml sample water, 5 drops reagent Fe, wait for 5 minutes

Mercury:	No
Dimmable:	No

Mercury:	No
Dimmable:	No

Products & Shop

JBL Fe Iron Test Quick test to determine the iron content in freshwater/marine water aquariums & ponds, Iron Test Fe

JBL Fe Iron Test Set

Properties

Electronic label / illuminant

JBL Fe Iron Reagent

Properties

Electronic label / illuminant

Misunderstandings – typical beginner mistakes

Time For A Change - Pros And Cons

Benefits of aquatic plants for the biosystem

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

Testing Water in the Jungle

Plant Fertilisation with Optimised Consumption

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Outline: Fertilisation in the Aquarium

Laboratory Comparator System to Compensate the Intrinsic Colour of the Water

50 % of Aquarium Owners have Technical Questions about Plant Fertilisation

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The JBL colour chart booklet now available

JBL and aquarium keepers help save the environment

Water Analysis Online Laboratory

Plant growth

Diseases

Deficiency symptoms

Algae control

Testing water

Plant care

Daily care

Fish breeding in aquariums

Planning and stock

Plant care

Fertilising

Plant species

Water tests

Water values

Plants

CO2 plant fertilisation

Light

The marine aquarium

Biotope (habitat) aquarium types

Aquascaping aquarium type JBL Dreamscape®

Jungle aquarium type JBL Rio Pantanal®

Rocky reef aquarium type JBL Malawi Rocks®

Goldfish aquarium type JBL Goldfish Paradise®

Testing water

Water treatment

Fish care

The water tests – all parameters

Instructions

JBL Fe Eisen Test

JBL Eisen Test Fe

assortment Test Colour Charts

Testlab empty + inserts

component set for water tests

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safety information in accordance with GHS

Signal word: Warning

Hazard symbol

Risk phrase

safety note

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JBL Fe Iron Test
Quick test to determine the iron content in freshwater/marine water aquariums & ponds, Iron Test Fe