I don't have a heater yet but I will get one either when or before I get my fish.
it may actually be this tank. I'm not sure.
I'm glad to hear you think it will be okay.
Is it worth getting a filter? I'd love to be able to cycle the tank but I didn't think the tank would really be large enough to support a stable cycle and if not I didn't think it would be worth any added stress (or noise for any potential roommates) but if I could support a cycle than I would get a filter. Also, my fish is going to need to be traveling back and forth a couple times a year which would also cause problems for a cycle I think? I've never cycled a tank before.