From looking at my lasius niger journal the temp jumps from 21 to 25 mostly arround 23. So to get it to a steady 25 I'm going to need a heat source.
I'm thinking a low watt (3w) heat mat and thermostat. With the mat between some thick card and under the nest. but can any one recommend one, another way to do it?
Is it only half the nest that needs heating?
Or would Messor Barbarus be ok at that slightly lower temp?
Messor Barbarus (Redhead)