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Sera KH-Test-15ml[Volume - 15ml]
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Facilitates monitoring of carbonate hardness in freshwater and saltwater
to approximately 390°dKH.In case of low KH values, we recommend using sera KH/pH-plus (in freshwater) or sera pond bio balance (in ponds), and in case of high values, we recommend filtering through sera super peat (in freshwater aquariums).