Normally, 16 plants are watered in a row so. This can be precisely controlled via the dropper. Instead of the built-in automatic timer I use the way a timer. Thus, the intervals can be controlled again fine.
For long vacations, the system is then supplemented that all plants that we have to be watered so (25). So far, all the plants have several holidays very good shape. Only the water tank had to be filled by a neighbor in between times.