fish died in my live rock

[Aquaria]

i had a fish (mccosker wrasse) that unfortunately died from ich, rubbing on rocks breathing heavy and spots of ich that had gone away a week ago but he was still rubbing and breathing heavy so 2 dys ago he stopped eating and yesterday he dissapered im pretty sure he went into his hole and died as i could not find him carpet surfing and the hole that is in the canopy is in the back so my cats could not have got him before i noticed the dissaperence now what do i do i cannot get him out of the rock im gong to try again during WC tomorrow but is there any safe on the rock method of flushing it out? im already dealing with GHA so i really dont need a nitrate spike?