I have a empty tank with dimmensions 60x30x30cm, is it too small? Is it better with a higher tank for a Dutch setup?
I would say that if you're going for that Dutch inspired look then what we've been discussing is that you can "make it your own". No need to stick with the traditional rules but rather just arrange plant groupings with different colors & leaf textures in combination with a bit of hardscaping (or without...either way) should be done to your liking in any size tank. Experiment with what you have and see how it goes...enjoy the journey.