You know that fish from tropical and subtropical regions do not feel comfortable at all at room temperatures that are comfortable for us people. That is why precisely regulated, constant water temperature is very important for your aquarium inhabitants.
Before the engineer Eugen Jäger invented the aquarium adjustable heater, there wasn’t any really satisfactory solution for controlling the water temperature suitable for different species. And everyone resorted to with complicated and sometimes odd methods. Some put the aquarium in the sun or next to the radiator or the heater.
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 JÄGER adjustable heater is an ultra-modern electronic thermal device with best available technology. Its new jacket of laboratory glass offers real benefits over the competition.
But otherwise you still have some excellent selling points:
The temperature can be precisely adjusted from 18° to 34°C and recalibrated if required. The control accuracy is +/- 0.5° C.
The heat is kept at a constant level. The heating function is indicated by a control lamp.
The can be fully immersed, is protected against dry running and is suitable for fresh or marine water.
The glass jacket enlarges the heating surface and ensures optimum even heat emission.
Laboratory quality glass jacket. This glass was developed for research purposes. Therefore it is free from pollutants that could be released in water. It is resistant to chemical and biological substances. It does not have any fissures and hair cracks through which condensation water could penetrate. And even extreme fluctuations of temperature that can occur when the water is changed do not bother this glass.