Removing hitchhikers from live rock with corals on it

[seth.s]

I’m planning on upgrading to a bigger tank soon and I want to transfer all my corals to the new tank. The problem is that I have Zoa colonies that are fully engulfing large rocks but I don’t want to introduce all of the hitchhikers to the new tank. How would I go about completely cleansing the rock whilst keeping the zoas on it alive so I can transfer to the new tank hitchhiker-less. Mostly wanting to remove the huge amount of fire worms in the tank and I noticed a small amount of Dino’s on the rock and sand( currently dosing bacteria and h2o2 for that)


Additional information/ reasoning/ goal

The current tank is a 40 cube that I bought used/established

I’m looking to upgrade into a 100-120 gallon tank

I’m wanting to build the ecosystem from the ground up so I have a good since of what is in the tank and hinge why I want to remove any hitchhikers from my current tank before the transfer

 

[Dread Pirate Dave]

That's a hard one. If you dipped the entire rock I don't know if I would trust it in a display tank. Even after a long stay in some sort of decontamination tank to pull the dip back out. But maybe that would depend on the dip?