Sustee Replacement Core Refills – Pack of 2 Keep your Sustee watering indicator working at its best with genuine replacement core refills. Simply replace the used core and continue enjoying effortless plant care. The Sustee core changes colour to help you know exactly when your plant needs water, blue means your plant has enough moisture, and white means it’s time to water. Easy to Replace Replacing your core takes seconds: Twist off the Sustee cap Remove the old core Insert the new replacement core Replace the cap and you’re ready to go 🌱 Product Details Includes 2 replacement core inserts Designed for use with the refillable Sustee Aqua Meter Available in Small, Medium and Large sizes Replace core approximately every 6–9 months for best performance Helps prevent overwatering and underwatering by taking the guesswork out of plant care Please note: This product includes replacement core inserts only. The Sustee watering stick is not included (shown for display purposes only). Looking for the complete Sustee watering indicator? Click here to shop Sustee Aqua Meters.