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Api Gh/kh Hardness Test Kit

SKU: APH21 Category: Tag: Brand:

RRP (inc. tax) Current price is $21.00 (inc. tax)

Out of stock

Estimated delivery

3-4 Days from order date.

Description

API GH/KH Hardness Test Kit

The API GH & KH Hardness Test Kit provides an easy-to-use drop-count titration method to measure General Hardness (GH) and Carbonate Hardness (KH) in freshwater aquariums. General Hardness measures dissolved calcium and magnesium ions essential for fish health, skin/scale development, and plant growth. Carbonate Hardness measures buffering capacity (carbonate and bicarbonate levels), which prevents lethal pH crashes by keeping water chemistry stable. Testing both parameters helps hobbyists replicate natural aquatic environments for specific fish, shrimp, and planted tank setups.

Usage & Application

When to Use

  • Setting Up New Aquariums: Test source/tap water to determine default mineral hardness before stocking fish.

  • Planted & Shrimp Aquariums: Monitor GH to ensure proper moulting in shrimp and healthy growth in live plants.

  • Breeding & Species-Specific Care: Adjust water hardness to match soft-water species (like Discus and Tetras) or hard-water species (like African Cichlids and Livebearers).

How to Use

  1. Testing GH (General Hardness):

    • Fill a clean test tube with 5 mL of aquarium water.

    • Add GH Test Solution drop by drop, capping and shaking after each drop.

    • Count the drops until the colour changes from orange to green.

    • 1 drop = 1 dGH (17.9 ppm).

  2. Testing KH (Carbonate Hardness):

    • Fill a clean test tube with 5 mL of aquarium water.

    • Add KH Test Solution drop by drop, capping and shaking after each drop.

    • Count the drops until the colour changes from blue to yellow.

    • 1 drop = 1 dKH (17.9 ppm).

Product Specifications & Highlights

Key Features

  • 2-in-1 Water Hardness Kit: Measures both General Hardness (GH) and Carbonate Hardness (KH).

  • Accurate Drop Titration: Simple drop-count method yields precise results in degrees of hardness (dGH/dKH) or ppm.

  • pH Shock Prevention: Helps prevent sudden pH crashes by maintaining proper KH buffering capacity.

  • Freshwater Essential: Crucial for fish breeding, freshwater shrimp molting, and planted aquascapes.

Product Details

  • Brand: API

  • SKU: APH21

  • Product Type: Aquarium Test Kit

  • Parameters Measured: General Hardness (GH) & Carbonate Hardness (KH)

Additional Information

API GH/KH Test Kit contains 2 test bottles, easy-to-ready instructions. No colour chart is included with the GH/KH test kit. This is because you add drops till you achieve the colour indicated in the instructions. The number of drops added compared to the chart in the instructions will give you your results.

The API GH & KH TEST KIT helps you duplicate the natural habitat of your fish to prevent stress, keeping them healthy! When keeping freshwater fish and plants, the general hardness (GH) and carbonate hardness (KH) of aquarium water should match their natural habitat.

 

Additional information

Weight 90.00 g
Dimensions 120.00 × 35.00 × 70.00 mm

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