Awesome guys thanks!! How many would you suggest getting?? Also, should I get a bunch of different kinds??? And what should I do about adding water movement to the tank??
If you want a bunch of different types, then I would get at least 3 of each species(4 different species) or 4 of each(3 different species). You could probably do more, but you should start out with that. For water movement, if you want more filtration, and water movement, this filter would be great
marineland penguin 350 bio-wheel(this is very powerful, and gives a lot of flow)
http://www.amazon.com/Penguin-Power...MDQM/ref=sr_1_1?ie=UTF8&qid=1307554306&sr=8-1
and if you don't want filtration, I would get this
koralia koralia evolution powerhead(1050gph)
http://www.petmountain.com/product//11442-522698/koralia-koralia-evolution-circulation-pump.html
but since they are both about the same price, I would go with the filter unless you have more than enough filtration already. Then go with the powerhead.