I have a 90 gallon tank with a 20 gallon sump and im not even running a heater and it is getting up to 83 degrees.. I have a chiller that I am running but I have no idea why I need to run it because my house it 70 degrees. The tank is acrylic
The only thing I can think that is heating it up is
The pump from the skimmer..
The UV sterilizer which I unplugged this morning
and the return pump.. Which is external (I just touched it and it feels hot, is it suppose to be)??
Im only running a 36 watt LED light right now until I get my new lights.. so that is not generating any heat.