The link huma-huma provided certainly helped me as I'm going through the process of setting up a SW
tank. Honestly, I haven't found it that much more expensive than when I set up my 55g FW
. I guess it depends on what size tank you're going for and what you're wanting to keep. Reef-capable lighting systems seem to be the kicker with cost of SW
, but then in comparison to a quality light and C02 system for a FW
tank it's probably not that much different.
If you give some outlines as to the size of tank you're looking at running and whether you want a reef system or will just be doing fish only with live rock, I'm sure people can chime in with some more specifics.