API – KH test kit – Accurate Carbonate Hardness (KH) Monitoring
Essential Water Testing • pH Stability Control • Freshwater, Marine & Pond Safe
The API KH Aquarium Test Kit is an essential tool for any aquarist looking to maintain stable, healthy water conditions. Whether you keep fish, shrimp, plants, or a mixed community, monitoring KH (carbonate hardness) helps prevent sudden pH swings and invisible water problems that can stress or harm aquarium inhabitants.
Why Test KH?
KH plays a key role in maintaining a stable pH, acting as a natural buffer in your aquarium. Regular KH testing helps you:
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Prevent dangerous pH fluctuations
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Maintain stable water chemistry for sensitive species
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Determine accurate dosing for pH-adjusting products
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Ensure optimal conditions for fish, shrimp, and live plants
A balanced KH level contributes to a healthier, more resilient aquarium environment.
What’s Included?
The API KH Test Kit contains:
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1 high-precision liquid reagent
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A durable mixing vial
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Clear, easy-to-follow instructions
Everything you need for fast, accurate, and repeatable KH measurements.
Key Features
✔ Highly accurate liquid test kit
✔ Simple to use with step-by-step guidance
✔ Excellent long-term reagent stability
✔ Suitable for freshwater, marine aquariums, and ponds
✔ Helps diagnose and prevent hidden water quality issues
Keep your aquarium stable and your aquatic life thriving with the API – KH Aquarium test kit—a reliable and versatile tester for long-term water health.





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