its a great idea for a grow out fer a month, it just depends on the size of the pood if too big the fh may not understand when you come to feed pellets, there were some low grade flowerhorns in a koi pond at a local mall and seemed fine ( in toronto, ontario) they seemed fine and we get jumps in temperture here, there hearty fish but I would not put my favourite masterpiece in a pond , more lowgrade stuff, too many blue herons here, fish may be eatten..