alybalyb hat geschrieben:The biggest Ytong I can get here is 610mm * 270mm by 150mm thick.
How long would that last before I would need to expand the farm? Get another block.
And how big will this colony get to how many blocks of Ytong will it get to?
The other spieces I'v been considering are Camponotus, Camponotus ligniperda, Camponotus aethiops or Camponotus herculeanus.
However would I be right in saying they require a damper habitat that might be harder to maintain?
What colony size do these spieses get to?
Al.
M. barbarus can get huge numbers (10.000+ as far as I know), if you take good care of them, but as they are relatively small, they can be in 1 Ytong block. The worst thing you can do when you start, though, is to get an Ytong that is too big. Like that, your ants will not keep the Ytong clean and you will get mold, this is bad for your ants. Though, there is less risk with a species that prefers a dry environment, obviously.
I have no idea how long such an Ytong would last, it depends on how you design the nest, how many chambers, how big, how well you take care of your ants etc.
Camponotus species grow very slowly, this is their trademark. You are right in thinking they need a slighty more damp environment, this really is not so hard to maintain, just check the stickies in the Building a formicarium section. I think C. ligniperda can grow up 6000 members (no idea about the others but I believe the same amount of ants), but as I said, they grow slowly. If you start by a sole queen, you will probably have 3 worker ants and a couple of pupae after 1 year.
Another species that is relatively easy to keep and is polymorph is Pheidole pallidula (though they are VERY small and good at escaping, no personal experience but I have read enough blogs about this sorts of 'accidents'

).
Perhaps you could also try Formica sanguinea, I find them very easy to keep, as well as a nice growth rate and quite big ants as well. They do not have 'soldiers' but they do have different sizes.
Those 2 species are nice European species I can think of, you could also go with something exotic but seeing as you are a beginner it really is not recommended.