Originally Posted by
nemofreakk23
http:///forum/post/2803193
ive been reading and it says that tangs should be fine with lots of swimming room. for a 30 galon tank it fairly has a bunch of open space and im only keeping them in there why they are small. by the time they even start getting too big for the tank it should be time to get another tank and thas when ill move them. and by the way its a yellow tang and a blue hippo tang.
That is not nearly enough room for either tang, and certainly not enough for the hippo especially. You're welcome to try and find out for yourself, of course. Hippo tangs have a high mortality rate at juvenile sizes, so even if there were enough swimming room (and in my opinion, there is not in a 30g) the juvenile hippos are more susceptible to HLLE and ich.
If you do this, keep in mind that most people on the boards here will be of similar mindset, and there's little that we will be able to suggest if you run into problems except that you put the fish in a tank of adequate size. Best of luck.