Minecraft wiki entry for Squid_farming, associated text: This design takes more time to be built but can achieve a very high ink rate. First of all you should clear as much water as possible out of the river or ocean biome within the render distance of the player. You have to build a chamber between layers 46 and 62, and fill it with water so squid will spawn. To make water push the squid to the bottom you have to place water sources only in the top layer, and also place solid column blocks, as water will only push if it has an adjacent solid block. Underneath the spawning chamber will be a layer of signs that can be traversed by squid but not water. Squid crossing the sign layer will land on a hopper platform, where squid will die either by fall damage or suffocation, and will gather all the resulting ink and send it to chests.