Oh, we have central air. Problem is we've in a third floor apartment, we get the heat from the two apartments below us, plus the units are like, 30 years old. I ended up getting a 8,000 BTU unit. The apartment, between the window unit and the normal central unit, is now around 75 degrees, down from its usually 83-85ish.
The issue is, while all other tanks now show around 79-81 degrees, the planted tank still shows 86-88 and I see the heater kick on every so often. Seems like the heater is out of whack. Gonna replace it today and hopefully this will end.