Grow SubSense

Correct positioning of the SubSense probe ensures accurate and consistent measurements of moisture, EC, and temperature, helping you make informed irrigation and nutrient decisions.

Rockwool cubes and slabs

• Place the probe 1 inch from the bottom of the Rockwool cube or slab.

• If using a Rockwool slab, position the probe equidistant between two plants to ensure balanced and representative readings.

Coco coir and organic substrates

The ideal placement varies based on pot size:

• 1-gallon coco pots → 1 inch from the bottom

• 2-gallon coco pots → 2 inches from the bottom

• 3-gallon coco pots and larger → 3 inches from the bottom

Large no-till or living soil beds

Check out our FAQ for this specific use case below.

How do I position my substrate probe in a large no-till or living-soil bed?

Why proper probe placement matters

• Ensures precise substrate data for moisture, EC, and temperature.

• Helps optimise watering and feeding schedules.

• Provides consistent root-zone readings, leading to healthier plant growth.

Still have questions? Contact us on [email protected].