What up CD, I was googling some Mataro Blue grow journals and came across yours.
Too bad they didn't make it, I had the same problem with germinating those seeds.
Ended up putting one right in a party cup and it came up in a few days, I can't remember right now but I think putting the paper towel in a plastic bag helped as well... It was more humidity or less that worked... prolly more... but anyway my mataro blue is LST'd and 40-45 days in veg and Ill throw a pic up next time I have the camera.

and subbed
* Nice plants so far too!