Tank Overheating

[alexjdavis19]

My heater is set at about 78, but my tank is way up at around 84 right now. Why is this? Could it be the high temperature in my home? Possibly a lower water level (it's about an inch low because I did a WC today and doing another tomorrow for cycling)?


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[Clayman]

How hot is it in the room? Most heaters aren't that accurate in terms of the setting. Have you tried turning it down?

 

[Autumnsky]

Are the lights on the tank heating it up more? I would try a different thermometer to verify.

 

[alexjdavis19]

The room is probably around 80 degrees. I turned the heater down and the fish seem much happier now and the thermometer reads 80 degrees, which still a little high for my little tetras.


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[scuba dude]

Could be a combination of multiple things. As mentioned lights and room temp are a couple things , also any pumps and power heads also create heat from the motors in them.
You can put a small fan( like a clip on desk fan ) that would blow across the surface of the water. I had the same problem and rigged up some small box fans like the ones that are used in computers.