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Elements | Parameters | Minimal | Maximal | Unit | |
General parameters | Acidity | pH | 7 | 8.5 | - |
Total hardness | GH | 10 | 25 | °dGH | |
Carbonate hardness | KH | 8 | 12 | °dKH | |
Oxygen | O | 6 | 15 | mg/l | |
Carbon Dioxide | CO2 | 5 | 12 | mg/l | |
Critical parameters | Nitrites | NO2 | 0.01 | 0.05 | mg/l |
Ammoniac | NH3 | 0 | 0 | mg/l | |
Copper | Cu | 0 | 0.002 | mg/l | |
Parameters favouring aglues | Nitrates | NO3 | 30* | 50* | mg/l |
Phosphates | PO4 | 0 | 0.3 | mg/l | |
Iron | Fe | 0 | 0.2 | mg/l |
* 5 to 10mg/l for Koi Carp