I get a bit of lecheate but not excess. You will see all sorts of bugs come and go. They balance themselves out.
Oyster shell is the only calcium I add, plus I use used soil which has all 3 calciums in it, and I still get the white mites.
Not infestations, but if I lay zucinni rings on top they will be the 1st to find it and it will look like lots, but then they disappear again. I let it do whatever it wants and never overwater it and never leave scraps on the surface and it just works all on it's own.
It will get skanky and wet if you over feed it. Most of the bugs will stay up in the top tray. Once you put another tray on top they will migrate up following the fresh food.
You should be getting a few drops at least out the tap.
I strongly suspect it’s too dry. I have plenty of calcium as well. Used soil that has 3 calcium types plus I added oyster shell to the bin. I haven’t gotten a single drop of leachate yet.
It said to keep it as moist as a damp sponge. I have a feeling I have a different definition of damp. The bedding is damp to the touch but no water comes out at all when squeezed, not a drop. That’s a damp sponge to me. However I read that it should be around 60% moisture and that’s definitely more than a damp sponge to me.