A method for etching a layer over a substrate in a process chamber, wherein the process chamber including a first electrode and a second electrode and the first electrode is disposed opposite of the second electrode is provided. The device has a central base unit including a large removable liquid reservoir and a handheld skin massageexfoliating device. The stack system and method uses warm industrial demineralized water from various sources, a micro-managed combined stack flue system and specific terrain to ring out every bit of energy possible from traditional, heretofore, acceptable wastes.