Long Replacement Sensor for Planter Technology's Container Irriagation System CWI 1000. Many of our customers have requested longer sensors for the CWI. These are primarily used for plants that need less water, or for plants in very low light conditions. The longer sensors are able to be set deeper into the soil, effectively creating a drier soil mass. In order to differentiate the long replacement sensors from standard ones, the long replacements use blue tubing. |