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Heather
I created the topic seriously! I am already somewhat familiar with the basics, but no one takes it seriously. I observed 15 liters of stone, sponge, krill, starfish, and a small fish (1 piece). Please, no spam; if you have experience or information, we are always open to everything: links to literature, photos, productive thoughts on how to go from zero to a living aquarium. I want to understand the problem thoroughly. It is very relevant.