The general hardness (GH) indicates the quantities of magnesium and calcium salts dissolved in the water. The recommended level is between 6 and 20°GH in freshwater, depending on the species kept. For freshwater only. 1 drop = 1°GH. Changes the colour from purple to blue. 2 x 10 ml to test 480°GH. Caution, observe the precautions for use.
*AS SeaTest GH Hardness – 40 Tests
SKU: 1VAS004
*AS SeaTest GH Hardness – 40 Tests
£19.09
The general hardness (GH) indicates the quantities of magnesium and calcium salts dissolved in the water. The recommended level is between 6 and 20°GH in freshwater, depending on the species kept. For freshwater only. 1 drop = 1°GH. Changes the colour from purple to blue. 2 x 10 ml to test 480°GH. Caution, observe the precautions for use.
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