ok that somewhat makes sense, what i am trying to do is send fertilizer into a fermetor. However when it is full it pops out the fertilizer, when i put a hopper on top, the fertilizer wont even go in. Sorry im a little new to piping items.
Hmm from testing a bit, it seems that fertilizer has to be input from the EAST side on the fermenter. Apparently it doesn't matter how matter which direction you place down the fermenter, its always the east side. Odd.
You can click the hopper onto the east side like this:
If you have multiple fermenters I would suggest using Routers. They can be a bit of work getting whats required in order to craft them, but they are surprisingly versatile. This is the Fermenter setup I'm using:
The routers are the purple ones to the right. The top router is inserting the plant materials into top sides of the fermenters. The bottom router is inserting the fertilizer(or Mulch in this case) into the West side of the fermenters(Routers compass directions are opposite of reality).