Henward yes for a long time, although when approaching maximum size opt for a round pond of at least 10 foot diamiter.
And guys you are playing with possibaly the worst monster fish you could have obtained, get used to the idea of a 5000 gallon plus pond, cos youll need one.
Look at it this way my sanitwongsei outgrew my 8x4 in little over a year, But mine was fed lots.
I purchased mine in the belief that it woud never grow larger than 3ft, wich is the problem with a lot of people who buy RTC's.
Anyways..... good luck!