I have a two container vermicomposting system with the bottom container having a tap to drain the leachate. I think I am maintaining my worm bin correctly as material feels damp but I cannot wring any water out of it. I spray some water on it very rarely if the top portion feels very dry. My worms do look happy - at least they are consuming the expected amount of food.
I do get a small amount of leachate (maybe quarter of an inch in depth) in the bottom bin. Sometimes I also see a few worms in the bottom bin, but I do know that they keep moving upwards when they need to. I am wondering if I can just pour the leachate back into the worm bin? I think the water should have bacteria and other stuff that might help decomposition a little more.