Do I Need a Heater?

[MidnightsSong]

This may be a very silly question, but in my condition do I need to get a heater?
I live in a tropical area.
I have also been monitoring my tank's water with a thermometer for the past two days. And it fluctuates between 78 and 82 degrees.
What are your thoughts?

[shellieca]

Not if it stays like that year round, day & night. A heater will keep it from dropping below 78F. Do you have a cool season? If so you may want to get heater at that time.

[MidnightsSong]

I was up late into the morning yesterday/today and the temp was still around 78 degrees.
We do have a cold season, but I believe we're already out of it...I'll have to wait until next year to see how the temp goes.

Thank you for a speedy response! :)

[sarahspins]

You might also pay attention to the temp during the summer if you have air conditioning - water is typically a few degrees cooler than the surrounding air, so if your AC is set cool enough it could be a problem for your fish.

[eemmais]

I would buy a heater just in case, so you could use it when it gets cold...they are only around $10-$20 for a smaller tank.