Is it expensive to setup and maintain a salt water fish tank??
It’s typically more expensive than freshwater, but it doesn’t have to be all that much more expensive. It depends on what you’re interested in keeping, and whether or not you decide to buy every gadget you see in catalogs. There are different “types” of saltwater tanks, too – fish only (FO), fish only with live rock (FOWLR) and reef. The FO is the cheapest way to go, and reefs are the most expensive. If you want to keep costs down (and gain some experience in marine fishkeeping) you might decide to start with a FO or FOWLR. There’s nothing that says you can’t change to a reef tank at some point in the future (as long as the fish you intially choose are reef-safe). Saltwater generally uses a larger tank, since the species tend to be larger and have more territorial aggression (something like keeping cichlids), plus they tend to be more sensitive to water quality, so they either need extra water volume or lower stocking rates (depending on how you want to look at this). A 29 is the small