Minecraft wiki entry for Dripstone_farming, associated text: JC Playz's design uses the same design the manual farm used, however there are observers and pistons to detect the dripstone as it grows. There is also a collection mechanism which funnels the dripstone into a chest for you. The farm itself is very resource friendly and produces a decent amount, however it is not very compact, since if you want to farm a massive scale of it you will need to build it in several strips.