For short-term watering over a few days, especially in summer, the Blumat with bottle adapter is suitable for use with a standard plastic water bottle. The bottle sits above the ceramic cone, providing a water reservoir – varying in amount depending on the bottle size – from which water is slowly but continuously pressed through the porous wall to gradually distribute in the soil. This system makes summer watering tasks easier. It is a simple solution for automatic short-term irrigation of plants on balconies and terraces, helping to ease the watering workload during periods of high demand. Compatible with almost all standard plastic bottles from 0.25 to 2.0 liters. Water output per day: ceramic cone: approximately 200 ml. Delivery includes: 3 ceramic cones.