The Planted Tank Forum - View Single Post - Tetra heater fried my fish!
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Old 01-11-2013, 05:27 AM   #9
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One more reason any tank of mine with a heater in it also has a temp strip/sensor on the glass that gets checked pretty much every day. Won't necessarily save from a sudden catastrophe--but it's let me spot problems before they get out of hand most of the time.

And heaters get pulled and tested at least once a year---check for signs of damage to the heater or cord, cleaned, and put in a separate container to see if they kick on when needed, heat to required temp, kick OFF when they're supposed to, and respond properly when re-set to higher temps gradually (as I'd do when treating ick).
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