API Saltwater Master Test Kit

Take the guesswork out of maintaining your saltwater aquarium with the API Saltwater Master Test Kit.

This easy to use liquid test kit measures the four most critical water parameters. Such as ammonia, nitrite, nitrate, and pH. This kit will be helping you quickly identify issues and keep your fish healthy and stress free.

Whether you're cycling a new tank or maintaining an established system, consistent testing is key to preventing problems before they become serious. With accurate results and simple color-coded readings, this kit makes water testing straightforward for beginners and reliable for experienced hobbyists.

What It Tests

• Ammonia (NH₃/NH₄⁺)
• Nitrite (NO₂⁻)
• Nitrate (NO₃⁻)
• pH (Saltwater range)

Why It Matters

Poor water quality is one of the leading causes of fish stress, illness, and loss. This kit allows you to monitor your tank closely and take action early. By keeping your aquarium stable and your livestock thriving.

Perfect For

• Saltwater fish tanks (FOWLR systems)
• New tank cycling
• Routine water testing and maintenance
• Beginner and intermediate hobbyists

What’s Included

• Test solutions for ammonia, nitrite, nitrate, and pH
• Glass test tubes with caps
• Color comparison chart
• Instruction guide

Pro Tip

For best results, pair this test kit with a salinity tester and a quality water conditioner like Seachem Prime to fully monitor and stabilize your aquarium.