300 litres

Hello there, I have a fully cycled 300 litre tank which consists of Colombian Red Fin Tetras, Black Phantom Tetras, Golden Barbs and Albino Corydoras. I however just added some Bolivian Rams in which the store I got them from claimed they'll be well suited for that tank. The question I have is...

Hey guys!   So I need help for stocking suggestions (those who had helped a few months ago may recognise me. I'm back again, but this time have a few measurements changed. :) )   Here is my tap water quality:    Anyway, I need some ideas on what fish I should stock. I would like a community...