WLR Hanna HI772 Checker – Saltwater Alkalinity Colorimeter for Reef Tanks

Overview

The WLR Industries Hanna HI772 Checker is a handheld colorimeter designed for saltwater environments. It measures alkalinity in degrees of carbonate hardness (dKH), delivering a direct reading in just a few steps. This approach can be a faster, more repeatable option than traditional chemical test kits, helping you stay on top of tank management without complex setup.

Why this matters in marine setups

Alkalinity acts as a pH buffer and provides carbonate ions essential for skeletal formation in corals and other reef inhabitants. Regular, reliable readings help you monitor trends and respond to changes before they impact your livestock. The HI772 makes it practical to track alkalinity as part of routine maintenance or during new tank cycles.

Key benefits at a glance

• Direct alkalinity measurement for saltwater systems (dKH).
• Compact, portable design that travels from tank to tank or lab bench.
• Multi-use versatility for aquariums and marine biology work.
• Rugged handheld form that fits in your toolkit for on-site testing.
• Simple operation with an intuitive interface to obtain readings quickly.

Real-life use cases

From testing a quarantine tank to monitoring reef tanks during routine maintenance, the HI772 supports quick checks in tight spaces. Its fast readouts can complement observation and water-change routines, helping you gauge whether adjustments might be needed without long wait times.

Getting started in a few steps

• Power on, prepare your cuvette and sample according to the on-screen prompts.
• Insert the sample and press a button to view the dKH reading.
• Record the result and plan your dosing or water adjustments based on your targets.

Note: While HI772 readings can be a helpful reference, integrate them with other tank data and your management plan for the best results.