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TEST GH
Kit consisting of:
What is Total Hardness
Total hardness (GH) is a measure of the amount of salts (mainly Calcium and Magnesium) dissolved in water.
Why measure it
Total hardness affects the osmotic regulation system of fish. Different species of fish require different values of water hardness depending on the habitat they come from. Therefore we speak of soft water fish (Cardinals, etc.) and hard water fish (African Cichlids, etc.).
How to do the test
1. Rinse the test tube repeatedly with the water to be analyzed.
2. Fill the test tube with 5 mL of water to be analyzed.
3. Add five drops of the GH 1 reagent and shake the test tube. The solution will turn reddish violet.
4. Slowly add the GH 2 reagent. The number of drops needed to turn the solution from reddish violet to blue will indicate the number of degrees GH.
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