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JBL PROAQUATEST Mg-Ca Magnesium-Calcium
Quick test for to determine the magnesium/calcium in marine aquariums

Product information sheet Instructions
  • Simple and reliable monitoring of the aquarium water values. Determines the ideal magnesium and calcium value for vigorous and healthy growth in corals and calciferous red algae
  • Easy to use: first carry out the calcium test, then the magnesium test; subtract the result of the calcium test from the result of the magnesium test – the result gives you the magnesium content
  • Reach: the number of measurements depends on the level of the calcium and magnesium content
  • You will find detailed information and troubleshooting tips about water analysis on the JBL website in Essentials/Aquarium or Pond
  • Package contents: 1 test kit Mg and 1 test kit Ca, incl. 5 reagents, 2 plastic cuvettes, syringe and dosing spoon. Reagent refill separately available
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Price: 35,94 €
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Price: 10,58 €
Recommended retail price incl. VAT
You can find this item in your specialist and online shop
Dealer close to you
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Instructions

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Product information

Healthy aquariums with conditions close to nature
The right water values are dependent on the fish stock, any algae present and the corals. 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 with conditions close to nature it is important to check and adapt the water values regularly.

Why test?
Along with calcium, magnesium creates the general hardness. Magnesium is, like potassium, a macroelement, which is necessary for the healthy and vigorous growth of corals. Too low calcium and magnesium levels affect coral growth and prevent beautiful calciferous red algae from growing.

Recommended calcium values:
Marine water aquarium: 1200-1600 mg/l

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

In recent years we had observed that our magnesium test with the factor 100 was showing too little magnesium. On expeditions to the “original marine water,” however, we were still able to measure the correct values, and this indicated that the low measurements were due to the artificially prepared marine water.
After that we carried out extensive tests with the various salt mixtures available on the market from various suppliers. The difference to original marine water came from the recently used magnesium salts and trace elements in the sea salt mixture, which caused a deviation of about 20-30%.
After our tests we modified the instructions in order to increase the multiplication factor from 100 to 120 in order to adapt it to the sea salt mixtures currently on sale.
As a result we can once again carry out precise measurements on artificial sea salts by using factor 120. With natural marine water we still use factor 100.

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Details

JBL PROAQUATEST Mg-Ca Magnesium-Calcium

Art. no.:
2413600
EAN Code:
4014162241368
For:
Set
Volume packaging:
0.8 l
Gross weight:
155 g
Net weight:
88 g
Weight factor:
0
Packaging dimensions (l/h/w):
43/175/106 mm

Properties

Animal species: Corals, Gobies, Snails
Animal size: For all animal sizes
Animal age group: All aquarium fish
Material: Reagent(s) in plastic bottle(s) and/or glass bottle(s) + plastic and/or glass accessories. REFILL: reagent(s) without accessories.
Colour: white / transparent / black
Dosage: See instructions

Electronic label / illuminant

Mercury: No
Dimmable: No

Technical Data

Height:175 mm
Length:105 mm
Width:43 mm

JBL PROAQUATEST Mg REFILL

Art. no.:
2413700
EAN Code:
4014162241375
For:
Refill
Volume packaging:
0.57 l
Gross weight:
48.5 g
Net weight:
21 g
Weight factor:
0
Packaging dimensions (l/h/w):
30/175/110 mm

Properties

Animal species: Corals, Gobies, Snails
Animal size: For all animal sizes
Animal age group: All aquarium fish
Material: Reagent(s) in plastic bottle(s) and/or glass bottle(s) + plastic and/or glass accessories. REFILL: reagent(s) without accessories.
Colour: white / transparent / black
Dosage: See instructions

Electronic label / illuminant

Mercury: No
Dimmable: No

Technical Data

Height:64 mm
Length:48 mm
Width:24 mm
FAQ
Where can I find the record sheets for the documentation of my water analysis?

Have you lost your record sheets, used them all up, or need them in another language?
In the appendix of this FAQ you will find PDF files for printing them out in German, English and French.

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

Why are there no colour charts for GH. KH, Mg /Ca saltwater and CO2 direct?

The tests from the test range: JBL GH test, JBL KH test, JBL calcium test Ca and JBL magnesium test Mg, where the number of drops are counted until the colour changes and the counted value is multiplied by a value:

GH = number of drops = general hardness in °dH

KH = number of drops = carbonate hardness in °dH

CO2 = number of drops * 2 = CO2 in mg/l

Magnesium + calcium = number of drops * 120 = amount Ca + Mg in mg/l

Calcium = number of drops * 20 = amount Ca in mg/l

Magnesium = amount Ca+Mg from magnesium test - amount Ca in mg/l = magnesium in mg/l

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.

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.

Blog (opinions & experiences)

JBL TV #53 How do you carry out water tests correctly and what are the most common mistakes?

Water tests for aquarium water can be very important, especially when there are problems.

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JBL PROAQUATEST - simple yet laboratory standard - Part II

Today we’re continuing on the topic of water tests, with Part II of the blog post from 22.01.2023. Enjoy reading.

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JBL PROAQUATEST - simple yet laboratory standard - Part I

Aquarium water tests are similar to a blood test at the doctor's. Water tests allow you to take a look at the water composition.

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JBL TV #45: Optimum water values in the freshwater aquarium - 15 parameters explained simply

Biologist Heiko Blessin explains in an easy to follow way what the individual water values mean.

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JBL TV #43: All the important values in seawater - Testing saltwater reliably

This is how to be sure you’re checking the water values in your marine aquarium simply and safely.

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JBL water tests - how to test correctly and reap the benefits

Lots of scientists & experts swear by the JBL water tests, but why?

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JBL TV #27: Testing aquarium water - this is how it works

Water tests for aquariums: Aquarium water can be clear and still toxic to aquarium inhabitants!

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Press
14.08.2020

JBL has the largest range of water tests worldwide!

With 24 different water analysis tests for freshwater and marine aquariums and ponds as well as 8 different test cases, JBL offers the widest range of water tests worldwide. The second place is shared by two American manufacturers with 15 individual tests each, but with only 0 and 2 test cases respectively.

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JBL Water Tests Now Even Better

Scientists, aquarium owners, pond enthusiasts, and especially those who need reliable, accurate water tests, use JBL water tests. Over the years, the JBL development team has been collecting and is now ready to implement your suggestions for improvements.

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Reference guide (Themeworld)

Marine water

There is a solution to almost every problem! And the hardest part is finding the cause of the problem.

Marine water treatment

What maintenance does your marine aquarium need?

Testing water

Testing water – the most important step to understanding your aquarium. Why is water testing necessary?

Fish breeding in aquariums

Would you also like to breed your fish? What do you have to consider when breeding?

The marine aquarium

Holiday at the coral reef - in your own living room! Marine aquariums are the most exciting branch of aquatics

Marine water - the water

What exactly is marine water? What is so special about marine water? How to create perfect marine water?

Algae - the plants of the marine water

Which plants can you have in your marine aquarium? What do you need to consider when caring for higher algae?

Marine animals

Which animals are suitable for your marine aquarium?

Daily care

How much daily or weekly care is involved? What are the basic maintenance measures for your aquarium?
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Instructions

  • JBL ProAquaTest Mg-Ca Magnesium-Calcium
    Download

Additional product information and downloads

  • JBL ProAquaTest Mg-Ca Magnesium-Calcium
    Download
spare parts

component set for water tests 

PROAQUATEST range colour charts 
accessories

PROAQUATEST Ca Calcium 

Quick test to determine the calcium content

PROAQUATEST Mg-Ca Magnesium-Calcium 

Quick test to determine magnesium/calcium

Customer reviews

Reviews

Overall rating: 5.0
1 public review for this product.

0 Reviews

Show another review in another languages

A review in another language

dr_scaper - Polish
2023-06-06T22:51:24Z

very professional aquarium test. these are the only tests i trust

JBL Mg 1 - safety information in accordance with GHS

Signal word: Danger

Hazard symbol

  • GHS02
  • GHS05
  • GHS07
  • GHS08

Risk phrase

H226: Flammable liquid and vapour.
H302: Harmful if swallowed.
H314: Causes severe skin burns and eye damage.
H318: Causes serious eye damage.
H335: May cause respiratory irritation.
H373: May cause damage to organs through prolonged or repeated exposure.
H412: Harmful to aquatic life with long lasting effects.

safety note

P101: If medical advice is needed, have product container or label at hand.
P102: Keep out of reach of children.
P303+P361+P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower].
P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P501a: Dispose of contents/container in accordance with local regulations.

Hazard-determining component

1310-58-3: potassium hydroxide
1310-73-2: sodium hydroxide
1336-21-6: ammonia
60-00-4: edetic acid

JBL Mg 2 - safety information in accordance with GHS

Signal word: Danger

Hazard symbol

  • GHS05
  • GHS08

Risk phrase

H314: Causes severe skin burns and eye damage.
H318: Causes serious eye damage.
H373: May cause damage to organs through prolonged or repeated exposure.

safety note

P101: If medical advice is needed, have product container or label at hand.
P102: Keep out of reach of children.
P303+P361+P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower].
P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P501a: Dispose of contents/container in accordance with local regulations.

Hazard-determining component

1310-73-2: sodium hydroxide
60-00-4: edetic acid

JBL PROAQUATEST Ca Calcium

JBL Ca 1 - safety information in accordance with GHS

Signal word: Danger

Hazard symbol

  • GHS05
  • GHS07

Risk phrase

H302: Harmful if swallowed.
H314: Causes severe skin burns and eye damage.
H318: Causes serious eye damage.

safety note

P101: If medical advice is needed, have product container or label at hand.
P102: Keep out of reach of children.
P303+P361+P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower].
P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P501a: Dispose of contents/container in accordance with local regulations.

Hazard-determining component

1310-58-3: potassium hydroxide
1310-73-2: sodium hydroxide

JBL Ca 3 - safety information in accordance with GHS

Signal word: Danger

Hazard symbol

  • GHS05

Risk phrase

H314: Causes severe skin burns and eye damage.
H318: Causes serious eye damage.

safety note

P101: If medical advice is needed, have product container or label at hand.
P102: Keep out of reach of children.
P303+P361+P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower].
P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P501a: Dispose of contents/container in accordance with local regulations.

Hazard-determining component

1310-73-2: sodium hydroxide
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