API SALTWATER CALCIUM TEST KIT

Maintain stable calcium levels and support healthy coral growth with the API Calcium Test Kit.

This easy to use liquid test kit allows you to quickly and accurately measure calcium levels in your saltwater or reef aquarium. Proper calcium levels are essential for coral development, skeletal growth, and overall reef stability.

Designed for simplicity and reliability, this kit is perfect for hobbyists looking to monitor calcium without complicated testing procedures.

What It Tests

• Calcium (Ca) levels in saltwater and reef aquariums

Why It Matters

Calcium is a critical component for coral and invertebrate growth.
Keeping levels stable helps prevent slow growth, tissue damage, and long term instability in your reef tank.

Perfect For

• Reef aquariums (soft coral, LPS, and beginner SPS)
• Monitoring coral growth conditions
• Routine water testing and maintenance
• Beginner and intermediate reef hobbyists

What’s Included

• Calcium test solution
• Glass test tube with cap
• Color comparison chart
• Step by step instructions

Pro Tip

For full reef monitoring, pair this test kit with alkalinity and phosphate testing to maintain balanced water chemistry and prevent parameter swings.