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Hardness

From £11.49
  • Comprises 80 Test
  • Liquid Reagents
  • Essential Test for Health of Ponds

GH & KH test kit combined. GH measures general harness and KH known as total alkalinity measures the buffering capacity of water in your pond. 

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Test Kit £11.49
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* Always follow the instructions on the label. This calculator is intended to be used only as a guide to how much product you need to buy to treat your system. It does not take account of displacement caused by shelves, rocks and ornaments etc. and does not include the volume of any external filtration system. NT Laboratories Ltd. will not accept any responsibility for inaccuracies or misuse of this guide.

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