Heat issue in a 12g NC DX

[cgyarring]

MJ 900 and MJ 600 for the pumps, currently just live rock and sand in it, can seem to get below 87, room temp is in the low 70s, and the tank hasnt cooled off since it heated up by accident (window AC got unplugged.

Any ideas why there is so much heat? I'm not even running the 48 watts it comes with, just one of the 24w PC bulbs right now, fans are fully functional. Any help is appreciated.

Thanks,

Caleb

 

[buttons buster]

Mabey the thermometer is broken.

What I would try to do is turn off the heaters if you have one running.
Once it gets back down to the temp that you want turn the heater to that setting and monitor temperature.
You could also do a gradual water change with cooler water.

 

[KidNano]

i'd say leave the top open put a big zip lock bag with ice in it in one of the back chambers and set up a fan to blow across the top of it. also make sure there isn't anything blocking the flow in or out of the pumps causing them to heat up.