At the bottom of the nest I've put a lot of little stones which absorb the water, I also poured water in the farm before I filled it with sand.
If you don't take the lid of too much, the nest will stay moist for years to come.
The green hose is used as a fail safe if the nest gets to dry so I can refill the water at the bottom of the nest, but I didn't have to use it yet.
The other bigger hose is to connect the nesting area with the foraging area.
Hello Formicking and welcome.
Its nice to hear that you are going to start with an easy species. ;) And that you first ask for advice before you buy/capture the ants.
If i where you i would make a tube (test tube) and capture a queen during mating flights, its not that hard and you can watch the colony grow from 0. That way you also have plenty of time to make a good farm. You can keep the colony in a tube for a few months without any problems.