The EHEIM aquarium heater is a further development of the legendary heating rod. 
The temperature can be precisely set from 18 to 34 °C and if required recalibrated (±2°). The temperature control accuracy is ± 0,5 °C. 
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 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).

Benefits