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Product Details
Quick test to determine the carbonate hardness (KH) in freshwater/marine aquariums and ponds,
- Simple and reliable monitoring of the water values in aquariums and ponds. Determines the ideal carbonate hardness in fresh and marine water
- Colour change test: fill plastic cuvette with sample water, add reagent drop by drop until colour changes from blue to yellow. Number of drops = level of carbonate hardness
- When to use: daily in the first week in newly set up aquariums, afterwards once a week
- You will find detailed information and troubleshooting tips about water analysis on the JBL website in Essentials/Aquarium or Pond
- Package contents: 1 KH quick test, incl. one reagent and plastic cuvette. Reagent refill separately available
PRODUCT INFORMATION
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?
The well-being of aquarium and pond dwellers and the healthy growth of aquatic plants depend to a large extent on the KH level being kept as constant as possible. The carbonate hardness is one of the most important water values since it keeps the pH level stable. The KH should never drop below 4 °dKH.
JBL Online Laboratory
Regular control for a healthy aquarium/pond 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 KH values:
Freshwater aquarium (community aquarium): 5-12 °dKH
Lake Malawi/Lake Tanganyika aquarium: 7-20 °dKH
Plant aquarium with few fish (aquascaping): 3-8 °dKH
Marine aquarium: 7-10 °dKH
Pond: 7-10 °dKH
FAQ
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.
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 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
JBL ProAqua KH test kit (Measures Carbonate Hardness)
SGD 13.40
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