Hanna Marine Ammonia Checker HI784

Protect your reef and monitor one of the most critical water parameters with the Hanna Instruments HI784 Marine Ammonia Checker, a precision digital tester designed for accurate ammonia measurement in saltwater aquariums.

Ammonia is highly toxic to marine life—even at low levels—making reliable testing essential for maintaining a stable and healthy reef system. The HI784 delivers fast, easy-to-read digital results, eliminating the guesswork of traditional color chart test kits.

Designed for reef hobbyists and professionals alike, this checker provides high accuracy and repeatability, allowing you to detect ammonia issues early—whether during tank cycling, after adding livestock, or when troubleshooting water quality problems.

🧪 Key Features

• Accurate digital ammonia readings for saltwater aquariums
• Detects low-level ammonia for early problem detection
• Eliminates subjective color matching
• Compact, handheld design for easy use
• Ideal for reef tanks, quarantine systems, and new tank cycling