Can only do a few at a time...tent is hella small... 2x2x3?
If a seed is immature it will not be brown in color, it will be whiteish in color.
Some seeds are small and some are big. If you want to know if they're any good you germinate them. I mean those all look viable to me.
I have four that im starting right now,two in dirt and two in paper towels to see which will start firstCan only do a few at a time...tent is hella small... 2x2x3