So, not a terribly interesting, life threatening question or anything....but, I'm curious. For my newer guy I picked up a 2.5 gallon(ish, I'm guessing, it was the medium size....)'Kritter keeper' because it was about all I had room for and I'd heard several people kept their bettas in them....and it was so much easier to carry
Anyway, I stuck in my Hydro mini heater..but had a slight problem. I couldn't close the lid all the way.

While its not something dire(the opening is very, very tiny....)I'm wondering....how do you all with 'Kritter keepers' deal with it? Do you just leave it propped up on one end? Both ends? Or do you force it down? I'd force down the lid, but I'm worried about busting the cord....
Thoughts? Experience?