The new Rena SmartHeater is the most innovative and technically advanced aquarium heater available today. Made of a resin composite construction the SmartHeater is indestructible which means you'll never worry again about a shattered heater. The easy-to-set, front-mounted temperature control dial is also smart, emitting an "abnormal temperature" warning flash if the temperature varies +/- .5 degrees. The SmartHeater has an overall design that is elegant and functional with unique, dual-sided heat radiators that deliver heat from both the outer and inner surfaces. The SmartHeater is safe for use in both saltwater or freshwater and is fully submersible with placement either horizontally or vertically. The unit comes complete with 6 foot cord,  heavy-duty mounting bracket and two suction cups.

The Rena SmartHeater is an engineering marvel in its own right but the real design intelligence comes when the heater is used to replace the intake of either the Rena SmartFilter or Rena Filstar XP External Canister Filter.  This combination produces a clean and clutter-free aquarium that brings nature one step closer to you. That's engineering to be natural. That's RENA.