Growlink Terralink Substrate Sensor Humidity Control Equipment Protection: Soft microfiber material

Equipment Protection: Soft microfiber material prevents scratches on sensitive lenses

75 cubic feet per bag

Color: Black w/ Green Guide Markings

Solvents do not ship to Hawaii

Growlink Terralink Substrate Sensor Humidity Control Equipment Protection: Soft microfiber materialReading the Root Zone with the Growlink TerraLINK Substrate Sensor The Growlink TerraLINK Substrate Sensor reads volumetric water content, bulk EC, and root zone temperature directly inside coco or rockwool. The probe runs as a TDR substrate probe Time Domain Reflectometry so EC drift doesn't corrupt the VWC number during aggressive drybacks. VWC reads 0. 01. 0 m m at 0. 02 from 053% and 0. 04 above. Bulk EC spans 020,000 S cm at (5% + 10 S cm) up to