Sustee 'Aquameter' Refill Cores

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This is a set of 2 replacement inserts for the Sustee 'Aquameter' Watering Guide. Easy to replace core refills, just twist off cap - remove used core - insert new core and replace cap. Core displays blue colour when the plant has enough water and fades to white when it is time to water. Replace core every 6-9 months for best results. Comes in Small, Medium and Large sizes Sustee’s inner core is 100% natural, made from non-woven cotton. Developed, designed and made in Japan. Show more