Water level indicator for plants, simple to observe, easy to maintain, scientifically tells you when and how much to water. Visible water level: made of plastic, safe, healthy and durable.Visible water level, observation at any time, flexible irrigation. Plant watering indicator, if there is no water in the pot, the water level indicator buoy is at the bottom.If filled with the right amount of water, the buoy will float.In general, the irrigation quantity buoys of the third and fourth positions are indicated as optimal. Easy to use, no batteries or electricity required, just plug it in and use it.Ideal tool for indoor and outdoor use. Water level meter, this water level meter is used for flower pots.It can display the water level to remind you to water.