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Description: Rena Cal Top Light Excel Heaters
* Rena Cal Top Light Excel Heaters shed a whole new light on heater technology
* Fully submersible aquarium heater for fresh and saltwater applications
* Safely raises aquarium water temperature and maintains it within 1°F

Extreme Accuracy - To adjust the temperature, just snap, click, and set! The control knob sets the temperature one degree at a time. Rena's state-of-the-art circuitry is computer-calibrated in water to maintain the temperature within 1°F (from 66-90°F).

Advanced Technology - High thermal diffusion provides quicker, more efficient heating, and insulating stainless steel connections help ensure controlled ON/OFF frequency.

Total Reliability - The 500-micron solid-silver contact thermostat eliminates the contact welding that causes overheating. The tubes are made of heavy duty, 2mm thick, borosilicate glass to resist accidental breakage from tank maintenance or "run-ins" with larger fish.

Tremendous Convenience - The easy-to-view indicator light illuminates when the heating element is operating. The unit is triple sealed for full submergibility to allow mounting either vertically or horizontally. 6 ft cord length permits easy installation.

A High-Tech Fiber Optic System - Fiber optics supply not only the top light ON/OFF indicator, but a side indicator light as well, so you can easily see the unit is working. The temperature control knob is also illuminated for at-a-glance viewing while maintaining your tank!

Keywords: Rena Cal Top Light Excel Heaters
 

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Discussion Starter · #2 ·
My heater turns off and on all the time. Doesn't hold a consistent temperature, and makes an audible click when it does turn on. My temp flux is between 5-10 degrees at times.

Positive, two lights that show what temp you set it at. But then again, what's the point if its not going to be holding the temp correctly in the first place.

Sully

Rating6
ProsSmall, light indicator
ConsDoesn't hold consistent temp
Would you recommend?no
 
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