How about put all your spare pocket change in it for a several months and then buy a larger tank that would be more appropriate for a starter SW
OK, it can be done, but the one thing to remember about SW
is larger volume is actually better for the beginner because it is more forgiving.
In a 5.5g you could probably have 1 fish and a few small inverts. I think the temptation to overstock would be too great. Just ask Fishfrik. :P
Anyway, I like the link, that could be done and seems like a good plan, but again very small amount of livestock. 1 maybe 2 nano fish. Keeping water quality up will prove challenging.
These would be some appropriate fish:
Otherwise save up for a larger tank. IMO
, a 55g or 75g would be an ideal starter tank if you have the money and space.
If money is an issue then that brings me back to my first suggestion.
Whatever you decide keep us posted,