- In the case of too low KH values we recommend Sera KH/pH-plus (in freshwater) or sera pond bio balance (in ponds)
- In the case of too high values we recommend filtering through Sera super peat (in freshwater aquariums)
- Makes it easy to monitor the carbonate hardness in fresh and salt water
- 15 Milliliter / 0.5 Ounce Test Kit
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