Elho 28cm Black Self Watering InsertThe Elho self watering insert makes plant care easy, and lets you give your houseplants the attention they deserve without taking up too much of your time. The insert is an easy watering system that makes sure your plant gets just the right amount of water at exactly the right time. The water meter on the device indicates when you need to fill it with water, and your plant will take care of itself for weeks to come. Like we said, easy! The insert fits