Hardener salt combination for reverse osmosis water
Improved more concentrated formulation!
Pure osmosis water is not suitable for direct use in an aquarium, except in a few special cases (pure flow tanks, black water biotopes). The little remaining amount of minerals would be absorbed to quickly. In order to provide the right supply for fish and plants, it is therefore appropriate and correct to increase the water hardness to a carbonate hardness of 1 - 3 ° dH. If you do not wish to blend in tap water (or if the tap water is not pure enough!), needs a hardener salt that provides the water with a defined amount of minerals.
Requirements
This hardener salt is only suitable for tank water with a sufficient amount of free CO2 (preferably provided by a well-adjusted CO2-device) and a pH-value significantly below 7, as otherwise some ingredients would only dissolve very slowly or not completely!
For Malawi- and Lake Tanganyika tanks, please use other hardener salt combinations.
Ingredients
21.7 % Carbonate, 17.2 % Hydrogencarbonate, 16.9 % Calcium, 14.7 % Sulfate, 9.8 % Chloride, 5.6 % Sodium, 5.3 % Magnesium, 2.3 % Potassium, 0.05 % trace elements
Dosage
3.75 g salt combination / 100 l osmosis water produce 1.0 ° dH CH or 1,2 ° dH TH respectively
3.0 g salt combination / 100 l osmosis water produce 0.8 ° dH CH or 1.0 ° dH TH respectively
Common measurements
- Level teaspoon: 1.6 g
- Heaped teaspoon: 6.4 g
- 5 ml measuring spoon (as found in medicine packs): 2.9 g
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