Hanna GroLine Direct Soil EC Tester/Pen Growth The plug may form whiteness

The plug may form whiteness on them due to this

A view mode switches to natural white so you can check plants without disturbing the run

Simplify your nutrients by directly installing Dosatron Doser into the water supply line

5 inch X 1

or MH lighting

Hanna GroLine Direct Soil EC Tester/Pen Growth The plug may form whitenessHanna GroLine Direct Soil EC Tester Pen The HI98331 Direct Soil EC Tester Pen is a pocket tester that allows you to directly measure soil conductivity (EC) and temperature. The Direct Soil EC Tester Pen is a great option for taking direct conductivity measurements in soil because of its compact size, automatic calibration, and single button operation. The HI98331's steel penetration electrode means you no longer have to make soil slurries. The HI98331