I'm kinda confused how population works for silicon-based:
1. Bubble help for silicon says those guys digest Durantium
2. However, bubble help for cities says I do need Promethion
So, do I need only one or both to get more pop?
I understand I do not need to build up food via farms and can get rid of the farm tiles toplace any other improvement there (like with synthetic)? But I still need cities, just not using normal food?
This is Crusade 3.7 before the most recent DLC (Intrigue, Retribution), dunno if that has changed meanwhile.