Fish come from all over the world and water temperatures vary immensely in their native environments and here in Australia. To be able to keep fish in an environment which is conducive with their natural habitat, we will need to increase water temperature above normal room temperature. Usually 26-28 Degrees for tropical fish.
We carry a range of traditional heaters like the Aqua One glass heaters, Fluval Tronic heaters or Eheim Jager heaters and if your looking for a external heater to connect with canister filter to create a bit more space in your aquarium the Hydor external heaters are the way to go.