When your first tray is filled to the top, it is time to add a second tray. The material in the first tray does not need to be fully composted before adding a new tray, but the first tray should be full of partially composted material, bedding, and food. This ensures that when you add the next tray, the worms can climb from the first tray into the second through the grid on the bottom of the second tray. All you have to do to set up the second tray is add shredded paper and/or leaves to use as bedding for the worms. Then, add a handful of food to a corner of the tray to entice the worms to migrate to the next level. It may take a full week for most of the population to make it to the next level. The worms will move in between both trays to finish working on the food scraps in the first level.
Posted in: How it Works / Feeding / Worms