Originally Posted by Nu-Nu the eel
In all honesty every one of those tangs needs a bigger tank. At least a 6' tank. Please do not add 4 tangs to your tank... Its just not big enough. If you really want a tang you can probably have 1, but it should be some sort of bristletooth tang, they stay smaller! Please take this advice!
It's a 75 QT so they aren't permanent and I'd imagine if you got that size QT then your DT is probably big
... With enough hides though and well kept water I don't see it being a major issue temporarily.