Well transplanting bigger bass don't work real well. A couple of things to consider when you do, do this.

1. Bigger bass don't like change into a different environment and they will most likely die.

2. Said bass you put in there needs a certain size class bait fish to eat to survive and thrive!

You cant just throw a 4 pound bass in a pond that does not have adequate food for said 4 pound bass...

IMO you would be better off growing your bass all together at the same time....

One other thing I have learned the hard way. Any small change to your pond you may think is small and not that big of a deal can come back HARD on you and mess your pond up... I'll I'm saying is be careful when you start throwing that change word around its a pendulum you cant stop once you start it...

Good Luck
RC

The only difference between a rut and a Grave is the depth. So get up get out of that rut and get moving!! Time to work!!