Hanna Instruments Halo Gel Filled Bluetooth pH Electrode environmental-controllers Optional continuous drainage

Optional continuous drainage

ONA is safe to use near children

The Illuminati Super Green LED Light Bulb (SG Night Light) allows you to work in your grow room during the dark cycle without disturbing your plant's photoperiod

• Faster processor with the new chipset and motherboard

Mounting Surface: Wall or Column

Hanna Instruments Halo Gel Filled Bluetooth pH Electrode environmental-controllers Optional continuous drainageHalo 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