Multi-block Farm isn't working and I don't know why

[bgm]

I'm fairly new to Minecraft in general (started about 3 weeks ago WITH FTB). Can someone explain why my multiblock farm isn't working? Here's a link to an album of some pics: http://imgur.com/a/kFO7K

There's power going to it, I've got a managed circuit board there, it's got an aqueous accumulator bringing it water. I'm not sure why it isn't working.

It's a 5x5, four blocks tall, and I have my stone platform on the 2nd level from the top.

EDIT: to explain the pic of the gui, it's been stuck with 63 fertilizer and that red bar for a long time. It doesn't move from there.

 

[Tristam Izumi]

Is that humus in your farm interface? You just need to put regular old dirt in there for it to work.

Quickedit: Ah, I see part of your setup is for a peat bog, so that's probably bog earth. Still, you'll also need some dirt for your other crops.

 

[bgm]

Ahhh, thanks, I'll give it a shot!

 

[rhn]

It is a Managed farm, right? Cause the manual farms require you to put down earth yourself.
If it is indeed a Managed farm, make sure to supply dirt yeah.

 

[bgm]

Yup, just needed dirt. Ugh, such a simple solution. Thanks, guys!