Oyster Shell Halves 2kg

Fitch First

£7.99

Oyster Shells - the sure way to always keep KH and pH values under control Oyster shells have an exceptionally stabilising effect on the KH value and consequently indirectly on the pH value. The KH value provides an indication of the water’s carbonate hardness. Many people believe that if their tap water is somewhat harder they won’t have any problems with KH and pH values. The KH to some extent acts as a buffer to the water’s degree of acidity (pH). Fish, plants and the biological filter ‘consume’ water hardness (KH). If, for example, too little water is then changed during the winter period,

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Oyster Shell Halves 2kg

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