Test Kits
API Calcium Test Kit
$16.99
- Ships any business day
- Products we use on our own reefs
- Questions? Ask a reef keeper
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Product details
Product details
API Calcium Test Kit is a titration-style water test kit designed for reef aquariums to measure calcium (Ca) levels in the aquarium water. In reef setups, corals, crustaceans, and other invertebrates use calcium to help fortify calcareous skeletons, so calcium can drop over time—especially in busy tanks. This kit gives you a practical way to check whether your aquarium calcium is being maintained so you can make informed adjustments as needed.
Features:
- Titration-based calcium testing for reef aquariums
- Helps you monitor calcium levels that can be depleted in a busy tank
- Determines calcium levels as low as 20 mg/L
- Includes detailed instructions to guide you through the test
- Includes a user-friendly color chart to help interpret results
- Useful for routine maintenance and ongoing water-parameter checks in reef systems
Specifications:
- Test type: Titration
- Minimum detectable calcium level: 20 mg/L
- Result interpretation: Color chart
- Included materials: Detailed instructions and color chart





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