Best way to heat?

[flybyferns]

Right now, I have a UTH for a 10 gallon on the side of the RETF tank. It is sufficient with the warm temps we've had, and I've even had to turn it off some days. During the fall, before the heat is turned on, the house can drop to 60 degrees at night. What would be the best way to heat? Is a UTH good? Then what size though? They are in a 20H currently. What kind of thermostat works best? I'm assuming with the up and down weather we get, I'll need one of those.

There is definitely an advantage of them being in that size tank.
They can't be 60 at night
I use exo terra heat cables - on timers.

The timers are changed with the temps in my basement and in the tanks over the winter.

If you should decide you need something like this, use EXTREME caution.
As you know, they need to be monitored very carefully.

It doesn't look pretty ...........but you might consider insulating the tank(s).
I hang those thick moving blankets behind the tanks.
I guess any extra insulating would help.