will this cause problems??

[vanreefer]

Once my new 120 has been repaired I will need to transfer things into the new tank. But I am starting to have a HA problem... and figured I would cook my rock for a while... My question is if I take the rock out of my current tank suction all the crud off the BB wher the rock used to be... change 50% of the water could I leave all my coral (mostly SPS but few softies, a RBTA) and few fish in the tank... would this cause a cycle because there is no rock in the tank?

ps the coral would be on a eggcrate rack... and there would be a few pieces of LR that some of the larger coral are attached to