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I am curious if anyone who had a heater malfunction was doing water changes and left the heater plugged in?
Always unplug, I don’t mess around with electricity & water when I’m cleaning.
It shouldn’t be an issue in a large tank to leave it on as long as it remains below the water level, assuming it’s fully submersible, and you don’t pour the water straight onto the heater.
Just unplug it before the water change, you should always try to match the temp of the water going back into your tank.
You’re supposed to unplug them when doing water changes. You should also go a couple degrees higher during your water change so the heater isn’t struggling to match the temp. A heater overworking can also cause it to malfunction.
Exactly. Or if the heater is on and the outside temp is cooler it’ll cause it to break.
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