Peter I fully understand your point. It´s not that I need to using every plant I have on my list. Maybe I will try to test a few plants that maybe arn´t suited for this type of water “by the book”.
Like Stefanie said about using/finding plants from a certain area that I can use in the tanks,
my region is Southeast Asia. By trail and error, in time you will have a list of plants you can use in this kind of water that are from this region. On this list will be plants that might not even live in -5.5ph water conditions “by the book”. But after testing it, they don´t seem to thrive or die, they just stay alive and survive.
If we can collect all the info of what plants are kept by who, and put all experience and the water conditions with it.We might end up with a nice plant-list with some personal tips, that people can use in the future.