A measure of the amount of water present in a given volume of substrate, typically expressed as a percentage. Used with substrate sensors to monitor moisture levels and optimize irrigation timing.
Dakota used the Pulse sensor to track VWC in the AutoPot coco substrate. After the first hand-watering in the 4x8, VWC jumped from 15% to 30%. He planned to use these readings to calibrate dry and wet thresholds and set automated alarms for the AutoPot system.
Discussed in: Ep 001