I am 16 and a total animal/biology lover. I recently decided to pursue a saltwater tank. I have been doing research daily (thank you Christmas break) for about a week and a half. I have two plans for two diffrent aquariums but only the money to have one of these. of course I would love any and all advice and I am a total newbie. and despite having done mounds of research still feel very clueless to this huge world of saltwater. plan #1: a 20 gallon tank, lng rather than tall, a mandarin dragonet, a foxface, a midas gobby,cleaner wrasse, no coral, no live rock, no protein skimmer, heater, full spectrm light, powerfilter, and maybe somewhere down the road a bubble tip anemone and a clown fish (not sure what kind yet) plan#2: (this plan was made when my fiance pointed out that over 300 dollars for plan #1 was a little much sense I cant move a 20 gallon tak to college with me in 2 years) smaller tank (12 gallon?) live rock (havnt decided how much) bubble tip anemone, 2 clowns( not sure what kind) possiable star fish, various corals, and then maybe another fish, like a mandarin dragonet(they are the coolest looking fish ever) or a foxface(m personal favorite) I wouldnt add the anemone until later, after the tank is a few months old, but can I add an anemone after Ive added clowns and still expect them to host? I have researched water, light, filters, sand/gravel, fish, thouroughly, its the live rock and corals I dont know much about. any advice? or alternative plans? something else, as I have been reading around the forums, ive noticed diffren things about substrate. Ive just been looking at generic, small sized gravel for my tank. I think that will work fine, but is gravel diffrent than calcerous rock gravel? or crushed coral? whats best for what im planning? I personaly want the long, 20 gallon tank, but i also want to be practical. also, I want to get the most I can out of either tank. maybe some corals, a variety of interesting fish, an anemone/clown relationship.