Hanna Instruments Halo Gel Filled Bluetooth pH Electrode pumps-and-irrigation-supplies For use with Big Boy

For use with Big Boy and most RO and filter systems with up to 8 GPM flow rates

Compatible with your existing T5 HO fluorescent fixture

Everything you need to grow fresh herbs all year

Double-ended system delivers higher PAR value with incredible uniformity

Because some states recognize only the acid-insoluble method

Hanna Instruments Halo Gel Filled Bluetooth pH Electrode pumps-and-irrigation-supplies For use with Big BoyHalo Gel Filled Bluetooth pH Electrode This Bluetooth enabled electrode turns your Apple or Android device into a full featured portable pH meter. HALO gives you the ability to measure, chart, record and share your data right from your phone. HALO enables the gardener to automate their pH and temperature logging efforts. This helps keep gardeners accountable and focused. You can stop relying on hand written data logs when you start using the HALO. pH