JBL TestLab Handbuch Seite 49

Instructions for the Magnesium Test in fresh water:
1. Rinse both beakers several times with the water to be tested.
2. Rinse the syringe with the water which is to be tested beforehand!
3. Use the enclosed syringe to fill each of the test jars with 10 ml of sample water each.
4a. Add 7 drops of Reagent 1 to one of the two test jars and mix by agitating.
4b. Add 3 drops of Reagent 2 to this test jar and mix by agitating.
4c. Add 2 drops of Reagent 3 to this test jar and mix by agitating.
5. Allow to settle for 1 minute until the colouring develops fully. The solution will remain stable for 15 minutes,
which is why readings taken after 15 minutes may deviate!
6. Place both test jars into the comparator block: the jar with added reagent into the smooth end of the comparator
block, the jar with the untreated sample water (blank sample) into the notched end of the comparator block.
7. Move the comparator block with the notched side of the block facing the scale and with both test jars from
side to side over the colour chart until the colour of the sample with added reagent matches the colour
under the blank sample as well as possible.
8. Take a reading of the magnesium concentration in the notch of the comparator.
Please observe the safety instructions!
You will also find easy-to-follow pictographic instructions on the reverse side of the colour chart.
Our tip for ecologically minded users:
All reagents for the JBL Test Sets are commercially available as reasonably priced refills!
Warning and safety note concerning Reagent 2:
Danger
Contains sodium hydroxide. Causes severe skin burns and eye damage. If medical advice
is needed, have product container or label at hand. Keep out of reach of children. Wear
protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse
cautiously with water for several minutes. Remove contact lenses, if present and easy to
do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician.
CO Direct Test Set
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Special features:
The JBL CO Direct Test Set is designed for quick and accurate determination of the carbon dioxide content in
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aquarium water.
Why test?
Carbon dioxide (CO ) is the most important plant nutrient. Aquarium water usually has values between 2 and 4
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mg/l if no carbon dioxide is added. However, a CO
20 - 25 mg/l having proven to be optimum levels. This level is not harmful to fish whilst at the same time promoting
luxuriant plant growth. Therefore, gradually adjust your CO
The amount of CO which needs to be added to your CO
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various factors. These factors include water agitation and the intensity of illumination (more light causes plants
to grow faster, thereby increasing the required CO
correct dose must be determined individually for each aquarium. You can find out more on this by reading the
instructions for use of your CO
Tanks with few or no plants such as those preferably used to keep fish from Lake Malawi or Lake Tanganyika do
not need to be supplied with additional CO
Remedial measures for fresh water:
Carbon dioxide concentration too low: < 20 mg/l. Add carbon dioxide with JBL ProFlora bio (CO
production by microorganisms). Use a JBL ProFlora CO
Carbon dioxide concentration too high: > 35 mg/l. There is a need for remedial action if the fish breathe
noticeably faster and hang around the water surface. In this case, aerate the tank by using a JBL ProSilent
diaphragm pump.
Reduce the supply of CO
fertilisation unit.
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.
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. In the event of acute carbon dioxide poisoning, perform a 50 % a water change.
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concentration between 20 and 35 mg/l is recommended, with
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fertilisation unit until this level is attained.
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fertilisation unit to achieve this value depends on
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) in addition to direct consumption by plants. Thus the
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fertilisation system to add the CO
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from natural
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.
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