Bluelab Soil pH Pen | Root Zone pH Meter Water Content Sensor The EPDM wall stays flexible

The EPDM wall stays flexible down to -25°F and takes hot water up to 160°F

and Max (10V) so you can return to a known airflow setting

and the fixture is rated to L90 above 54

Transplant and Stress Recovery: Helps plants recover from transplant shock

Bluelab Soil pH Pen | Root Zone pH Meter Water Content Sensor The EPDM wall stays flexibleBluelab Soil pH Pen: Accurate Root Zone pH Meter Get fast, reliable pH readings right at the rootsno slurries, no guesswork. This compact handheld pen measures pH and temperature directly in soil, coco coir, rockwool, or nutrient solutions to keep your plants in the sweet spot for nutrient uptake. Benefits of a Soil pH Meter for Growers A double junction pH probe delivers accurate readings while resisting contamination, and the backlit display is easy