Tropf Blumat Dripline 3mm 98 Feet plant irrigation The Tropf-Blumat is a sensor that supplies plants with drips of water via thin tubing. It begins to drip automatically when the soil/coco is dry and stops dripping when an adequate moisture level is reached. Tropf Blumat automatically waters individual plants, and only when needed. Easily connects directly to your hose tap/faucet.