There's been way too much emphasis placed on forming a fungus mat. The fungus comes from your environment and "just maybe" your local resident fungus doesn't like to form that mat. I made this for beginners. Note the object is to remove the gel and gel sac and then dry the seeds. Hope this might answer some of your questions about how to do fermentation.
The primary goal of fermentation is to get the seeds out of those sacs and dissolve the gel. Once that has been done, it's time to rinse and dry them. The bleach rinse is optional.
http://t.tatianastomatobase.com/wiki...g_Fermentation