Blumat - Universal Bottle Adapter: for short-term use over a few days, especially in the summer, it is best to use an ordinary plastic bottle attached using an adaptor to the Blumat system. The water-filled bottle can be placed above the clay cone- in varying amounts, depending upon bottle size. The water is slowly but continually distributed through the porous clay wall of the cone and spreads gradually in the surrounding soil. This method can lighten the workload of watering in the summer. Fits almost all standard size plastic bottles from 0.25 up to 2.0 liter.
