A pack of 2 refills for the Medium Sustee Aquameter. Sustee is unlike any other moisture sensor - you can leave it in the soil and it works for 6 to 9 months without the accuracy rapidly degrading. The inner core will tell you when to water the plant. This multi-award-winning design is maintenance free and works with all types of plants. No batteries required. Colour of the inner core changes based on pF values. White means the plant needs watering; blue means it has enough water. The inner core needs to be replaced after 6-9 months in order to work optimally. (Available here) The inner core is made from biodegradable fabric. Made in the Japan. The Medium Sustee Aquameter measures 7.1"(18cm) in length and should be placed within a 7.8"(20cm) radius of your plant. Comes with one inner core.
