OK so I need to treat for red bug. I have a small 3gal I can set up to save 10 or so crabs but here is my question. If I take some rock out of my sump to set up the quarentine tank, do risk some red bugs on that rock? I guess I could just not put it back in the tank. I would not want to sacrifice the crabs as it is only a 50gal system. I think I can get 5 or 8 crabs out but not all of them. I figure with the water changes etc... I can handle 6 or so dying and the nitrates. Any thoughts? I guess the same would be the case if I took mud out of the sump etc... right?