What is the best air humidity for my ants?
Required air humidity depends on the ants species. However air humidity is not of such big importance than soil humidity. Too high moisture or dammed air (e.g. fully closed basin) can contribute to mold build-up (rests of food and other organic mater) and also may leads to mites increase. In the majority of cases air humidity is negligible and don’t required to be controlled separately. It should be regulated by soil moisture. It turned out that in most cases a good solution is to run dry first centimeters of the soil layer and keep the lower layers moist. Of course, the nest area must not dry out! If you have a basin with a soil layer of about 5 centimeters for instance, you could run try the first centimeter. This will prevent mold build-up und guarantees ideal moisture for nest area. Air humidity should be conform to origin area. Ants from tropical rain forest should have higher air humidity than ants from Souther Europe for example. But also in tropical areas the ants exposed high
