I know I've made my share of mistakes with the freshwater, but I have fixed almost all of them (working on the water changes and feeding schedule) and I have been told by an expert salt water aquarist that I know a lot about salt water and that I might be able to start a salt water... I do not want to do corals at first (later on however if I can afford it I will) just FOWLR. I would like to know the stocking size for a 30 gallon... I would like a couple of blue legged hermit crabs and some of those little white algea snails just so that algea doesn't become a problem. I am really set on keeping a clownfish or two, but I also like the blennies... Tell me good alternatives, and if these fish would get along... Are these good begginer fish?