1. Science Research: Transform your space into a natural classroom for children with these innovative tips. By utilizing atmospheric pressure to precisely regulate water flow, these selfwatering spikes create an interactive learning experience and open doors to exploring the natural sciences. 2. Widely Compatible: Enjoy seamless performance with our reliable spikes, designed to fit most standard bottles. This plant watering system is compatible with bottle openings measuring 1.101.18 inches in diameter. 3. Versatile Convenient: Ideal for a variety of indoor and outdoor plants, these dependable spikes keep your plants hydrated even when you're away. The 600ml bottle provides slow watering for 17 days, while the 1.5liter bottle extends hydration to 715 days, depending on the selected flow rate. 4. Simplify Gardening: Save time with this automatic watering device, allowing your plants to selfhydrate. Spend less time watering and more time enjoying your plants and life. These selfwatering planter inserts are suitable for various plants, including vegetables, potted plants, and indoor greenery.