Tropf-Blumat Bonsai
Dripper with moisture sensor, core element of the “Tropf-Blumat-System”,
- Bonsai Sensor -

10,55 €
Available immediately
Deliverydate: 13.06.2023 - 14.06.2023 (DE - int. shipments may differ)
Dripper with moisture sensor, core element of the “Tropf-Blumat-System”,
- Bonsai Sensor -
  • 1 Tropf-Blumat Bonsai
    (without drip tubing and T-connector)
Consists of a cylindrical bottom piece (= porous clay cylinder with threaded neck piece) + a watering head
Size (approx.): length- 85 mm, Ø clay cylinder- 18 x 28 mm, Ø max. 35 mm
Automatically controlled, specialized dripper for 1 plant or 1 bonsai dish of approx. 2.5 cm deep, the clay cylinder should be inserted entirely in the soil. Drip tubing and T-connector are required in addition for connection to the water supply tubing; water pressure is required for operating (see Function).

Advantages of the Bonsai-Watering-System:

Especially good growth continues can be achieved through the regularity of watering. Due to the lack of space for water in the dish, watering by hand is often difficult or possible only by the impractical submersion of the bonsai dish in water. A slow dripping watering method is especially advantageous as it can also be set for moderate moisture levels.


"Tropf-Blumat" (Tropf = Drip) works using pressure as its basis, it requires a minimum pressure for the correct functioning of the watering head and to avoid cloggage.
The Tropf-Blumat is the heart piece of the entire system and acts as a moisture sensor and dripper at the same time. Every dripper location is therefore sensor controlled according to the tensiometer principle. Also included in the system are fittings to connect the tubing.


Fill the Tropf-Blumat with water (part of the sensor function only!) – see Directions for Use  – and insert into moist soil. As the soil becomes drier, water is sucked out of the feeler which is a porous clay cone. This creates a sub pressure (partial vacuum). As the pressure develops, a membrane in the watering head is released (before then it is squeezed together), opening the thin dripper tubing; the tubing begins slowly to drip. The water seeps through the soil once again to the clay cone, causing a lessening of the sub pressure, the valve closes; the dripping slowly stops.


The Tropf-Blumat is adjusted using the brown knob; it should be set so that when the soil is optimally wet, the dripper has just stopped dripping. When first using, the sensor requires a certain settling period. Therefore, adjusting should be carried out only after a day of use. The general recommended adjustments are described in the Directions for Use or in our Recommended Settings. It is important that the adjustment is correct from the beginning! 


The water being used must be clean (there is no filter in the system), it can contain completely water soluable fertilizer. It is recommended to treat water that is extremely hard (over ca. 30°dH) by softening or to use rainwater, if possible. Light lime deposits in the tubing can be removed by rubbing. 
The water inside the sensor should be occasionally checked. However, in general, the water will not need to be topped off during the watering period. Under certain conditions, winter operation is also possible.

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