I've been thinking a long time to about starting aquarium (never kept fish in my life!) and reading a lot of things while contemplating. (So far I'm thinking 180L tank (47 gallons?) with lots of plants, 20-30 neon/cardinal tetra's, one suckerfish and shrimp) With terms like: GH, pH, Kh, ammonia, nitrite, nitrate etc. everything feels overwhelming. It seems so complex to have right balance of everything (and keeping it in right balance) that fish have bigger change of getting killed than actually having a well balanced tank with natural acting fish. I don't want to be responsible for killing any living thing and it's suffering, because I have some urge. I respect life too much. So, yes or no? Is this hobby really complex and maybe rethink this or does it just sound complicated on paper and it's not that difficult. I'd like to hear your thoughts, please. Thank you for your time!