Set of four water level indicators (buoys) for pots, offered in four sizes: 12.7 cm, 19.8 cm, 22.9 cm, and 35.6 cm to fit a wide range of planters. Key benefits - Visual hydration monitoring: The buoy sinks when water is low and rises when water is added, providing a clear, at-a-glance cue to water as needed. - Reduces guesswork: Helps prevent under-watering and over-watering by showing soil moisture status at a glance. - Easy coordination: Use across multiple pots with different sizes without guessing which indicator fits each planter. Durable and versatile - Material: Made from robust plastic that withstands strong sun exposure and heat. - Indoor and outdoor use: Built to maintain functionality in both indoor and outdoor environments. How it works - Visual indicator: The buoy moves with water level, offering a simple, intuitive reminder to water when necessary. Compatibility and sizing - Four sizes to accommodate a variety of pot diameters and depths, enabling use with many common planter styles. Use scenarios - Indoor houseplants in small to medium pots on shelves or windowsills. - Outdoor planters on balconies, patios, or decks. - Large garden pots or window boxes that require regular moisture checks. What’s included - A four-piece set of water level indicators in the four sizes: 12.7 cm, 19.8 cm, 22.9 cm, and 35.6 cm.