I have ordered a 81Litre 20 US gallon marine aquarium and don’t know what to stock it with I am going to decorate with dry sand and rock I know that I want ocellaris clownfish and pink tiled starfish as well as a few corals and I am considering emerald crabs and snails I’m not sure what do you think what type of snails would be best if I should get snails and could I have a sea urchin ? Help and recommendations will be appreciated


