@Julia_M That document is the water quality report which doesn't give hardness; and very few UK water companies give KH (which they call alkalinity)
The document does give your water zone, Glencorse C, and this is your hardness from another page on Scottish Water's website
View attachment 123869
Fishkeeping uses 2 units - some profiles use one, some use the other so you need to know both. For Glencorse C, the numbers you need are:
Hardness as mg/l CaCO3 = 33.83 - this is called ppm in fish profiles
German degrees = 1.89 - this is called dH or dGH in fish profiles.
Your hardness is very soft.
What are the dimensions of the tank?
Something like a large shoal of one of the Boraras species could look stunning
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