- Includes 2 replacement sticks for use with refillable Sustee Aqua meter – Replace core every 6-9 months for best results
- Easy to replace core refills, just twist off cap – remove used core – insert new core and replace cap
- Core displays blue color when plant has enough water and fades to white when it is time to water
- Available in Small, Medium and Large sizes
- This Product does not in include a Sustee pen.