EHEIM thermocontrol 25w heater

With the EHEIM precision heater your fish receive exactly the right
temperature - in any aquarium.

Obvious ideas often are the best ones. For example, the aquarium heater
as a rod. The heating rod is simply hung in the water and heats it. It is true
that the principle is still the same as decades ago. But a lot has changed in
the meantime. And today the EHEIM adjustable heater is an ultra-modern
electronic thermal device with the best available technology. A jacket made
from special laboratory glass increases the heating surface, serves as a heat
shield, and ensures optimum even heat emission. And no matter if you want to
heat a 20 or a 1000 litre aquarium - you have 9 sizes to choose from.

Benefits of the EHEIM thermostatic heaters:

Precise temperature adjustment from 18 up to 34 DegC

Simple and safe recalibration (+/- 2 DegC)

Temperature control accuracy +/- 0,5 DegC

Heat kept at a constant level

Heating function is indicated by a control lamp

Completely submersible (watertight)

With automatic dry run shut-off (Thermo Safety Control)

A glass jacket increases the heating surface and ensures optimum even
heat emission

Handy cable length ca. 170 cm

Including double suction cup holder

9 sizes for aquariums from 20 up to 1000 litres

Suitable for fresh and marine water

Precision, ease of use, quality and safety "Made in Germany"

The EHEIM aquarium heater is a further development of the legendary
heating rod.

The temperature can be precisely set from 18 to 34 DegC and if required
recalibrated (+/- 2 Deg). The temperature control accuracy is +/- 0,5 DegC.

The heat is kept at a constant level. The heating function is indicated
by a control lamp

The rod is absolutely watertight, can be fully submersed, has an
automatic dry run shut-off (Thermo Safety Control) and is suitable for fresh
and salt marine water.

One of the most important innovations is the glass jacket:

It increases the heating surface, condenses the heat, ensures
optimum even heat emission and forms a heat shield (touching it doesn't
harm the livestock).

The jacket is made from special laboratory glass, which was developed
for research purposes. Therefore it is free from pollutants that could be
released into the water. It is resistant to chemical and
biological substances. It doesn't have any fissures and hair cracks
through which condensation could penetrate. And even extreme fluctuations of
temperature that can occur during a water change do not harm this glass.