This Kelp farm is a relatively compact design. Here's how to get it working: 1. Fill the lake with water 2. Make sure the waterwheel is spinning 3. Replace the vault and the Display Board 4. Right click, then press the "ESC" button on every display link (there's 2) 5. Find the sign that says "Maintenance" and go down the hatch 6. Make sure that the car assembler is on "lock rotation" 7. Move the redstone block down one, and push the minecart so it starts moving 8. Replace the kelp 9. Inside the shack, at the top, press the button (left side) 10. (Cosmetic) Move all the blocks above the harvesters down one so that the contraption is concealed There you go! Your kelp farm should be setup!