Eheim Jager Heaters Simple ideas often are the best ones, for example, the heater as a rod. The heating rod is simply hung in the water and heats it. The JGER heater is an ultra-modern thermal device using the best available technology. Its new jacket of laboratory glass is an extra quality dimension. The temperature can be precisely adjusted from 64 degrees to 93 degrees F. The heat is controlled to a constant temperature. The heating function is indicated by an on/off control lamp. The heater can be fully immersed, is protected against running dry and is suitable for fresh or marine water. Jacket of laboratory safety glass. Made in Germany. The glass jacket enlarges the heating surface and ensures optimum even heat transfer. Thus, a smaller wattage than other brands will heat the same volume of water..
