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Hobby Fish retail aquatic store between Milton Keynes, Northampton & Buckingham

Online orders are despatched from multiple sites. Online stocks do not reflect stocks held at our Milton Keynes store. Please call
01908 543210
to confirm instore stocks before travelling.

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GH Test Kit


GH Test Kit


Total hardness test for freshwater.

The JBL GH Test Set is an easy to use quicktest for determining the total freshwater hardness.
  • Recommended level for fresh water: 8 - 20 dGH.
  • 1 drop = 1 dGH.
  • Colour change from red to green.
  • A higher general hardness in the aquarium compared to that of tap water suggests that water was topped up rather than renewed!

RRP: £ 10.99
Our Price:  £ 9.34
Delivery: 7-14 days
GH Test Kit

RRP: £ 5.79
Our Price:  £ 4.92
In Stock© Hobby Fish Tick Image
2-4 days.
GH Test Kit