I purchased the Formicarium below.
https://tarheelants....-hearth-black-5
It came with some vinyl tubing, but one end is sealed shut. I would assume you would want both ends open so that the ants can travel between the two sections. Is their a particular reason on end would be sealed shut? I was going to cut the end off, but I didn't want to do that and screw something up. I don't have any species at the moment, but I bought the formicarium for next year when the local species start coming out again.
Thank you!