Archive for the Water Quality Category

Dosing Kalkwasser

Kalkwasser, otherwise known as limewater, is actually calcium hydroxide. Kalkwasser is a very fine powder and is normally introduced to the aquarium with the top-up water. There are realistically two methods to add kalkwasser to the aquarium, these are by a ‘kalk reactor/stirrer’ or by using what is called the

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Water Hardness – What Is It?

Water hardness in the marine aquarium is important. The term ‘water hardness’ is maybe too general. It would probably be better to call it carbonate hardness. Another term that is perhaps more recognised in marine hobby circles is alkalinity. In the sea, the measurement is around 8 dKH (or 2.9

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