Reptile Systems Heating Cables provide regular and even heating. Being completely waterproof, they can be used in any kind of setup where water sits on the base of your terrarium. This helps generate a slow water circulation through the material on the bottom of the tank, thus creating the natural effect of waterbearing stratum. Ideal for heating reptiles, amphibians and small animals. Suitable for plant propagation systems. In order to benefit from heating cable features, we strongly recommend using a suitable thermostat.