Hanna Instruments Halo Gel Filled Bluetooth pH Electrode pumps-and-irrigation-supplies Can be used up to

Can be used up to the day of harvest on vegetables

Designed for and formulated for hydroponics

Whether used in soil

it makes the sharpening process nearly effortless

• Proprietary blend of chelated micro and macro nutrients

Hanna Instruments Halo Gel Filled Bluetooth pH Electrode pumps-and-irrigation-supplies Can be used up toHalo 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