About Fritz Liquid Test Kits – GH
General hardness (GH) is commonly overlooked in many aquariums, but this parameter plays a very important role in your aquariums overall health. GH is the total mineral content of calcium and magnesium in the water. These are important for various biological functions in fish, invertebrates, and even plants. Deficiencies of calcium and magnesium can cause poor growth and faded colors in fish, molting difficulties in invertebrates, improper leaf development on plants, or thin, brittle snail shells.
Freshwater systems will typically have a GH of 4-8 dGH (70-140 ppm). Soft water species like Discus prefer very soft water below 4 dGH (<70 ppm), while some African Cichlid Species prefer a GH above 8 dGH (>140 ppm).
Test Kit Specifications
| Parameter | Value |
|---|---|
| Test Type | General Hardness (GH) |
| Units | dGH / ppm |
| Test Range | 0 – 20 dGH |
| Accuracy | ±0.5 dGH |
| Kit Contents | Test solution, color chart, vial, instructions |
FAQ
How accurate is the GH test result from this kit?
The kit provides accurate results within ±0.5 dGH, suitable for routine monitoring of water hardness.
Can this test kit be used for both freshwater and saltwater aquariums?
This kit is designed for freshwater aquariums only. It is not suitable for saltwater systems.
What should I do if the color reading is outside the expected range?
Please contact customer service for further assistance with interpretation or calibration.
Peter Grant –
The GH test kit is easy to use and gives clear, reliable results. I’ve been using it for several months and it helps me maintain the right water hardness for my Discus fish. The color chart is well-designed and the instructions are straightforward.
Joshua Sutherland –
I found the test to be consistent with my previous measurements. It’s a small but essential tool for keeping my aquarium balanced. The only minor issue is that the vial needs to be shaken thoroughly before use.
Nicola Peake –
This kit has improved my ability to monitor water parameters. My African Cichlids are thriving now that I know their preferred GH range. The results are quick and the test is very repeatable.