Jay
I had a 75, 55, and 29 gallon setup at one time and like Jen Said once they are setup they are not that hard. You just need to do a 25 % water change once a week and vacuum 1/3 of the gravel. I had 2 of mine set up with wet/dry filter systems. The 29 had a fluval and did fine. You just have to keep your temps constant and watch you’re saliently level as water evaporates you need to add some to keep your salt level in check. Also find you a local fish guy that knows what he is talking about. As you do your research and learn, you will be able to tell who does not know what they are talking about. Now if you want corals and live rock you are going to need actinic lights and maybe a uv filter. But overall I had fun when I did it.
If I get back into fish I am going with Tropheus from Lake Tanganyika