I always add my ingots with a pair of pliers and add it slowly, slow enough it melts off the bottom of the ingot before i get it down in the melt, this way i know the ingot is hot enough that there will be no water following it under the surface. I also use a plastic shoe box from wal mart for quenching, I drilled a hole in the top and glued a plastic funnel in the hole, so I can drop the boolits and not worry about it splashing up into the empty mold.