The AquaBrew Scale Grenade is a revolutionary product that will help reduce maintenance on your plumbed coffee maker. Traditional pour over coffee makers are easier to clean than plumbed units since a descaling and cleaning solution can easily be poured into the reservoir and run through the machine with a normal brew cycle. Since plumbed machines have no reservoir, the best course of action is to help prevent scale buildup to begin with. The Aquabrew scale grenade does just that. It easily attaches to the water line before your brewer. Easy connect plumbing fittings accept copper or plastic tubing - the same type typically used for refrigerator water lines. The scale grenade will normally last between 6-18 months depending on use and water conditions.