Your mix looks too dry to me man. It needs to be kept damp and warm. I use a spray bottle for the first week almost depending on growth. I also recommend wrapping plastic wrap over the top of the pots to keep humidity/heat/moisture in. When it sprouts, remove the wrap. :thumbs:
EDIT:Those you have are a bit tall(the pots)..Can you move the lights up any at all?
Not positive on the best option for pot size due to space. My high ass just remembered you were in a PC.

Anywho..no worries..I'm still here to help, but have you checked out the Micro section?