Bluelab Soil pH Pen Cloners Differential from 4°F to 20°F

Differential from 4°F to 20°F (2°C to 11°C)

The fan's mixed-flow design helps compensate for airflow resistance created by carbon filters and ducting

5" Display

Repeat every 2-4 weeks during the growing season

Units per box: 40

Bluelab Soil pH Pen Cloners Differential from 4°F to 20°FBluelab Soil pH Pen Root Zone pH & Temperature, Made Simple Know whats happening where it matters mostthe root zone. The Bluelab Soil pH Pen is a handheld meter designed to quickly and accurately measure soil pH and temperature, helping you keep plants in the optimal range for nutrient uptake and overall health. Unlike traditional methods that require messy soil slurries, this pen measures directly in soil and also works in coco coir, rockwool, or