Aquarium Systems GH Test Kit

$24.99

The general hardness (GH) indicates the quantities of magnesium and calcium salts dissolved in the water

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The general hardness (GH) indicates the quantities of magnesium and calcium salts dissolved in the water.

  • For freshwater only
  • 1 drop = 1°GH
  • Changes the colour from purple to blue
  • 2 x 10 ml to test 480°GH