From what ive read theyre easy to maintain....as long as theyre Tank Bred/Raised! Wild caught ones are very hard to keep, they require feedings of live food which can prove to be exspensive and they dont take frozen foods usually.
Tank wise, you want a relatively tall tank. Although they may seem small, they are fairly active. You want alot of hitching posts for them as theyre like monkeys, they use their tails to hold ont o things most of the day
Chemistry wise, they are relatively hardy. They can handle slight readings of ammonia etc, but of course this isnt ideal for them and they may still react badly. A salinity of aroun 1.022 is fine and they prefer lower templs around 24 degrees celcius.
My two cost me £110
Before you go for SHs, go for a normal reef tank, so you can become experienced with the SW side of chemistry, maintenance etc
IMO so far they are easier than i thought...they were supposed to go grey due to stress and not eat for a few days...but touch wood nothing like thats happened so far
Thank you very much for your comments and yes Jenny ill post a pic of the tank up soon