API KH Carbonate Hardness Test Kit – pH Stability for Fresh & Saltwater

Product Overview

The API KH Test Kit accurately measures carbonate hardness (KH) in both freshwater and saltwater aquariums. Maintaining the proper KH level is essential for pH stability, which helps prevent sudden pH swings that can stress or harm fish and plants. This test is also helpful in determining the correct dose of pH buffers for your tank.

Features & Benefits

• Tests carbonate hardness (KH) in both freshwater and saltwater aquariums

• Helps stabilize aquarium pH and maintain safe water conditions

• Allows precise dosing of pH buffer treatments

• Easy-to-use with color chart and clear instructions

• Contains everything needed: 1 reagent bottle, glass test tube, color chart

• Supports a healthy aquatic environment by preventing invisible water issues

Product Details

• Includes: 1 test solution, 1 glass test tube with cap, color chart, instruction guide

• Aquarium Type: Freshwater & saltwater

• Purpose: Tests KH to maintain pH stability and dose pH buffers

• Brand: API®

Directions

1. Fill the test tube with aquarium water to the indicated line.

2. Add the test solution drop by drop, shaking gently between drops.

3. Count the number of drops until the color changes to indicate KH level.

4. Compare the number of drops to the chart for results in dKH or ppm.

FAQ

How do I clean the test tube properly?

Rinse with water immediately after use. Avoid soap. Use a bottle brush and API Safe & Easy cleaner for stubborn residue.

How hard should I shake the test tube during testing?

Shake gently by inverting the test tube every 1–2 seconds after each drop. Ensure the cap is tightly closed.

Can I reuse the test tube?

Yes, just make sure it’s cleaned thoroughly after each use to avoid contamination.