The Hydor Hydrokable ensures regular and even heating. This is often used for under gravel heating that helps circulate the water and gunk which may be trapped in the gravels water. Another feature of under gravel heating in an aquarium is it assists plant by helping to release food from the substrate and circulate it through the aquarium.
These can be used on their own or you can add a temperature controller to be able to set what temperature you would like. The Hydor Hydrokable can also be used for a completely dry environment for reptiles and other terrariums. They also come with a 2 year manufacturer's warranty.
Hydrokable 25W - 14' long
Hydrokable 50W - 20' - long
Hydrokable 75W - 25' - long
Hydrokable 100W - 33' - long | 
