
The problem I am having is the water tube housing for the humidity of the nest seems to be leaking water. This is a glass tube of 15mm x 150mm. The sponge-like material going up the nest vertically doesn't seem to soak the water very well either, but I guess this will create the required humidity gradient regardless. So I was going to seal this housing but I am not sure what is safe to use. I of course don't want to kill our Lasius Niger once they arrive.
Any advice would be very welcome, thank you.