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

  • 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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Recommended retail price incl. VAT
Available from your specialist dealer.
Dealer close to you
You can find this article at your specialist shop and online
Recommended retail price incl. VAT
Available from your specialist dealer.
Dealer close to you
You can find this article at your specialist shop and online
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.

Details

JBL PROAQUATEST Mg-Ca Magnesium-Calcium

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

Technical Data

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

JBL PROAQUATEST Mg Magnesium REFILL

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

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 the following 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.

Her’s how in greater detail:
JBL GH test kit: Instead of 5 ml use 10 ml aquarium water. Now 1 drop is equivalent to 0.5 dGH.
JBL KH test kit: 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.

JBL NH4/NH3 Ammonium/Ammonia test kit, JBL NO2 Nitrite test kit, JBL Fe Iron test kit and JBL Cu Copper test kit:
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 test kit, JBL SiO2 Silicate test kit, JBL PO4 Phosphate sensitive test kit and JBL Mg Magnesium test kit 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

JBL PO4 Phosphate test kit 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

JBL K Kalium test kit:
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

JBL CO2 direct test kit, JBL Ca Calcium test kit and JBL Mg+Ca Magnesium+Calcium test kit:
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.

Press

12.03.2019

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.

Find out more
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Instructions

  • JBL ProAquaTest Mg-Ca Magnesium-Calcium
    Download

Product tests & info

  • JBL ProAquaTest Mg-Ca Magnesium-Calcium
    Download

safety instructions

  • JBL ProAquaTest Mg-Ca Magnesium-Calcium
    Download
Safety information
JBL Mg 1 - safety information in accordance with GHS
Signal word
Danger
Hazard symbol
  • GHS02
  • GHS05
  • GHS07
Risk phrase
H226: Flammable liquid and vapour.
H314: Causes severe skin burns and eye damage.
H335: May cause respiratory irritation.
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/regional/national/international regulations.
Hazard-determining component
1336-21-6: ammonia
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.
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/regional/national/international 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.
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/regional/national/international regulations.
Hazard-determining component
1310-58-3: potassium 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.
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/regional/national/international regulations.
Hazard-determining component
1310-73-2: sodium hydroxide