Ant Farm for small colonies

Some days ago I designed a small Ant farm for small colonies: It uses a "glass tube", I got from a german store called "Depot". It has an outer diameter of 39.5 mm and an ID of something around 38 mm. It´s not super round, thats why I had to play around a little bit with diameter settings. Maybe you can find one similiar. After printing I glued the glass tube to the PLA part with a little bit of aquarium silicone. On the back of the design there is a water reservoir. The water can reach through the bottom into the inside of the farm. I filled the inside of the reservoir and the farm with cotton and glued a small piece of mosquito net to the inside of the water channels, that the ants cannot break out. On the inside cover I made small holes to add some plastic plants. The small ring was intended to put some honey in, but in the end I decided to use some bottle lids. Sadly my Lasius niger queen died, so atm I´m not using the farm.