fish question

[logen32]

hello i was wondering if you would be able to advise me on a new fish that would be good in my tank. Right know i have a blue tang( I know a 55 gallon is two small I am moving to a new house soon and with it a 180 gallon or bigger) a kole tang who is 2 inches and a clown fish. Would it be okay to add another fish or would the bio load be to big.
Thanks

 

[stacyt]

If you'll be upgrading to a 180 soon, why not wait to add anymore fish? I would leave the tank as is, until I removed the tang. Chances are the tang will be very aggressive towards anything added, since it has established itself.