im helping a friend fix his badly damaged tank ... by damaged i mean disgusting lol..... he has been listenin to all the wrong people so ive been helping him get his tank back in order but he has these red rocks they look basically like live rock but are a burgundy red .... does any 1 know if these are reef safe....b4 i put anything living back in his tank i want to make sure wether or not to leave these rocks in.... thanks in advance