Consider a 40G breeder tank, lots of swimming room for fish, or for building a little reef tank. Another nice tank is a 36 or 46G Bowfront. Has a nice look to it.
One of the first things to think about will be which type of fish (as well as if SW
). Spend a bunch of time looking at different fish at stores, especially independent stores which often carry more of a variety of fish.
Also do you know what your water parameters are out of the tap. pH, KH
, often working with the water you have, and then select fish for that kind of water, will be a smart start.
Say if you have very hard water, keeping soft water fish will be more complicated to adjust every water change.