20 hours in...only a single pop so far.....and Bomb Seeds Widowbomb is trying to really set the standard with a quick sprout!! I only have the two populargrow leds running currently, so floor temps are lower than many of the times i sprout. No problem if they need a day in a half instead of 24 hours to pop.....as long as they pop!! I expect 11 of 12 to sprout at the minimum, but 100% germ would be very typical. The only two i am worried about is the blueberry(last seed in a 5 pack, so they are 5 years old and not stored properly), and the fruity chronic juice(4 years old).
It'll be interesting to see if my theory on "older seed take longer to sprout" holds true.