Hi Yankadi.
I have no experience with hyalella and paros, – but regarding what you mention about a section on forum, – if you look at the menupoint weblinks (left on the frontpage)you can see that we have tried to gather links to places where you can buy life food cultures in different countries.
If you have any other good sources or places where someone who is looking for live food cultures can buy, or even find information, – you are very welcome to write this to me.
I will add this to the link section then